diff --git a/src/pages/AnalyticsPage.tsx b/src/pages/AnalyticsPage.tsx
index 1557679..977f183 100644
--- a/src/pages/AnalyticsPage.tsx
+++ b/src/pages/AnalyticsPage.tsx
@@ -4,6 +4,12 @@ import { Users, Clock, MessageSquare, Send, Inbox, Calendar, Loader2, RefreshCw,
 import ReactECharts from 'echarts-for-react'
 import { useAnalyticsStore } from '../stores/analyticsStore'
 import { useThemeStore } from '../stores/themeStore'
+import {
+  finishBackgroundTask,
+  isBackgroundTaskCancelRequested,
+  registerBackgroundTask,
+  updateBackgroundTask
+} from '../services/backgroundTaskMonitor'
 import './AnalyticsPage.scss'
 import { Avatar } from '../components/Avatar'
 
@@ -48,6 +54,13 @@ function AnalyticsPage() {
 
   const loadData = useCallback(async (forceRefresh = false) => {
     if (isLoaded && !forceRefresh) return
+    const taskId = registerBackgroundTask({
+      sourcePage: 'analytics',
+      title: forceRefresh ? '刷新分析看板' : '加载分析看板',
+      detail: '准备读取整体统计数据',
+      progressText: '整体统计',
+      cancelable: true
+    })
     setIsLoading(true)
     setError(null)
     setProgress(0)
@@ -60,27 +73,70 @@ function AnalyticsPage() {
 
     try {
       setLoadingStatus('正在统计消息数据...')
+      updateBackgroundTask(taskId, {
+        detail: '正在统计消息数据',
+        progressText: '整体统计'
+      })
       const statsResult = await window.electronAPI.analytics.getOverallStatistics(forceRefresh)
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，当前页面分析流程已结束'
+        })
+        setIsLoading(false)
+        return
+      }
       if (statsResult.success && statsResult.data) {
         setStatistics(statsResult.data)
       } else {
         setError(statsResult.error || '加载统计数据失败')
+        finishBackgroundTask(taskId, 'failed', {
+          detail: statsResult.error || '加载统计数据失败'
+        })
         setIsLoading(false)
         return
       }
       setLoadingStatus('正在分析联系人排名...')
+      updateBackgroundTask(taskId, {
+        detail: '正在分析联系人排名',
+        progressText: '联系人排名'
+      })
       const rankingsResult = await window.electronAPI.analytics.getContactRankings(20)
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，联系人排名后续步骤未继续'
+        })
+        setIsLoading(false)
+        return
+      }
       if (rankingsResult.success && rankingsResult.data) {
         setRankings(rankingsResult.data)
       }
       setLoadingStatus('正在计算时间分布...')
+      updateBackgroundTask(taskId, {
+        detail: '正在计算时间分布',
+        progressText: '时间分布'
+      })
       const timeResult = await window.electronAPI.analytics.getTimeDistribution()
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，时间分布结果未继续写入'
+        })
+        setIsLoading(false)
+        return
+      }
       if (timeResult.success && timeResult.data) {
         setTimeDistribution(timeResult.data)
       }
       markLoaded()
+      finishBackgroundTask(taskId, 'completed', {
+        detail: '分析看板数据加载完成',
+        progressText: '已完成'
+      })
     } catch (e) {
       setError(String(e))
+      finishBackgroundTask(taskId, 'failed', {
+        detail: String(e)
+      })
     } finally {
       setIsLoading(false)
       if (removeListener) removeListener()
diff --git a/src/pages/AnnualReportPage.tsx b/src/pages/AnnualReportPage.tsx
index ded4362..018fbdb 100644
--- a/src/pages/AnnualReportPage.tsx
+++ b/src/pages/AnnualReportPage.tsx
@@ -1,6 +1,12 @@
 import { useState, useEffect } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { Calendar, Loader2, Sparkles, Users } from 'lucide-react'
+import {
+  finishBackgroundTask,
+  isBackgroundTaskCancelRequested,
+  registerBackgroundTask,
+  updateBackgroundTask
+} from '../services/backgroundTaskMonitor'
 import './AnnualReportPage.scss'
 
 type YearOption = number | 'all'
@@ -49,8 +55,17 @@ function AnnualReportPage() {
   useEffect(() => {
     let disposed = false
     let taskId = ''
+    let uiTaskId = ''
 
     const applyLoadPayload = (payload: YearsLoadPayload) => {
+      if (uiTaskId) {
+        updateBackgroundTask(uiTaskId, {
+          detail: payload.statusText || '正在加载可用年份',
+          progressText: payload.done
+            ? '已完成'
+            : `${Array.isArray(payload.years) ? payload.years.length : 0} 个年份`
+        })
+      }
       if (payload.strategy) setLoadStrategy(payload.strategy)
       if (payload.phase) setLoadPhase(payload.phase)
       if (typeof payload.statusText === 'string' && payload.statusText) setLoadStatusText(payload.statusText)
@@ -91,6 +106,14 @@ function AnnualReportPage() {
         setIsLoadingMoreYears(false)
         setHasYearsLoadFinished(true)
         setLoadPhase('done')
+        if (uiTaskId) {
+          finishBackgroundTask(uiTaskId, payload.canceled ? 'canceled' : 'completed', {
+            detail: payload.canceled
+              ? '年度报告年份加载已停止'
+              : `年度报告年份加载完成，共 ${years.length} 个年份`,
+            progressText: payload.canceled ? '已停止' : `${years.length} 个年份`
+          })
+        }
       } else {
         setIsLoadingMoreYears(true)
         setHasYearsLoadFinished(false)
@@ -105,6 +128,18 @@ function AnnualReportPage() {
     })
 
     const startLoad = async () => {
+      uiTaskId = registerBackgroundTask({
+        sourcePage: 'annualReport',
+        title: '年度报告年份加载',
+        detail: '准备使用原生快速模式加载年份',
+        progressText: '初始化',
+        cancelable: true,
+        onCancel: async () => {
+          if (taskId) {
+            await window.electronAPI.annualReport.cancelAvailableYearsLoad(taskId)
+          }
+        }
+      })
       setIsLoading(true)
       setIsLoadingMoreYears(true)
       setHasYearsLoadFinished(false)
@@ -120,6 +155,9 @@ function AnnualReportPage() {
       try {
         const startResult = await window.electronAPI.annualReport.startAvailableYearsLoad()
         if (!startResult.success || !startResult.taskId) {
+          finishBackgroundTask(uiTaskId, 'failed', {
+            detail: startResult.error || '加载年度数据失败'
+          })
           setLoadError(startResult.error || '加载年度数据失败')
           setIsLoading(false)
           setIsLoadingMoreYears(false)
@@ -131,6 +169,9 @@ function AnnualReportPage() {
         }
       } catch (e) {
         console.error(e)
+        finishBackgroundTask(uiTaskId, 'failed', {
+          detail: String(e)
+        })
         setLoadError(String(e))
         setIsLoading(false)
         setIsLoadingMoreYears(false)
diff --git a/src/pages/AnnualReportWindow.tsx b/src/pages/AnnualReportWindow.tsx
index 344393b..94d82f5 100644
--- a/src/pages/AnnualReportWindow.tsx
+++ b/src/pages/AnnualReportWindow.tsx
@@ -2,6 +2,12 @@ import { useState, useEffect, useRef } from 'react'
 import { Loader2, Download, Image, Check, X, SlidersHorizontal } from 'lucide-react'
 import html2canvas from 'html2canvas'
 import { useThemeStore } from '../stores/themeStore'
+import {
+  finishBackgroundTask,
+  isBackgroundTaskCancelRequested,
+  registerBackgroundTask,
+  updateBackgroundTask
+} from '../services/backgroundTaskMonitor'
 import './AnnualReportWindow.scss'
 
 // SVG 背景图案 (用于导出)
@@ -164,6 +170,13 @@ function AnnualReportWindow() {
   }, [])
 
   const generateReport = async (year: number) => {
+    const taskId = registerBackgroundTask({
+      sourcePage: 'annualReport',
+      title: '年度报告生成',
+      detail: `正在生成 ${formatYearLabel(year)} 年度报告`,
+      progressText: '初始化',
+      cancelable: true
+    })
     setIsLoading(true)
     setError(null)
     setLoadingProgress(0)
@@ -171,25 +184,46 @@ function AnnualReportWindow() {
     const removeProgressListener = window.electronAPI.annualReport.onProgress?.((payload: { status: string; progress: number }) => {
       setLoadingProgress(payload.progress)
       setLoadingStage(payload.status)
+      updateBackgroundTask(taskId, {
+        detail: payload.status || '正在生成年度报告',
+        progressText: `${Math.max(0, Math.round(payload.progress || 0))}%`
+      })
     })
 
     try {
       const result = await window.electronAPI.annualReport.generateReport(year)
       removeProgressListener?.()
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，当前报告结果未继续写入页面'
+        })
+        setIsLoading(false)
+        return
+      }
       setLoadingProgress(100)
       setLoadingStage('完成')
 
       if (result.success && result.data) {
+        finishBackgroundTask(taskId, 'completed', {
+          detail: '年度报告生成完成',
+          progressText: '100%'
+        })
         setTimeout(() => {
           setReportData(result.data!)
           setIsLoading(false)
         }, 300)
       } else {
+        finishBackgroundTask(taskId, 'failed', {
+          detail: result.error || '生成年度报告失败'
+        })
         setError(result.error || '生成报告失败')
         setIsLoading(false)
       }
     } catch (e) {
       removeProgressListener?.()
+      finishBackgroundTask(taskId, 'failed', {
+        detail: String(e)
+      })
       setError(String(e))
       setIsLoading(false)
     }
diff --git a/src/pages/ChatPage.tsx b/src/pages/ChatPage.tsx
index a663b67..6256d9b 100644
--- a/src/pages/ChatPage.tsx
+++ b/src/pages/ChatPage.tsx
@@ -14,6 +14,12 @@ import JumpToDatePopover from '../components/JumpToDatePopover'
 import { ContactSnsTimelineDialog } from '../components/Sns/ContactSnsTimelineDialog'
 import { type ContactSnsTimelineTarget, isSingleContactSession } from '../components/Sns/contactSnsTimeline'
 import * as configService from '../services/config'
+import {
+  finishBackgroundTask,
+  isBackgroundTaskCancelRequested,
+  registerBackgroundTask,
+  updateBackgroundTask
+} from '../services/backgroundTaskMonitor'
 import {
   emitOpenSingleExport,
   onExportSessionStatus,
@@ -1067,6 +1073,13 @@ function ChatPage(props: ChatPageProps) {
   const loadSessionDetail = useCallback(async (sessionId: string) => {
     const normalizedSessionId = String(sessionId || '').trim()
     if (!normalizedSessionId) return
+    const taskId = registerBackgroundTask({
+      sourcePage: 'chat',
+      title: '聊天页会话详情统计',
+      detail: `准备读取 ${sessionMapRef.current.get(normalizedSessionId)?.displayName || normalizedSessionId} 的详情`,
+      progressText: '基础信息',
+      cancelable: true
+    })
 
     const requestSeq = ++detailRequestSeqRef.current
     const mappedSession = sessionMapRef.current.get(normalizedSessionId) || sessionsRef.current.find((s) => s.username === normalizedSessionId)
@@ -1130,8 +1143,23 @@ function ChatPage(props: ChatPageProps) {
     }
 
     try {
+      updateBackgroundTask(taskId, {
+        detail: '正在读取会话基础详情',
+        progressText: '基础信息'
+      })
       const result = await window.electronAPI.chat.getSessionDetailFast(normalizedSessionId)
-      if (requestSeq !== detailRequestSeqRef.current) return
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，当前基础查询结束后未继续补充统计'
+        })
+        return
+      }
+      if (requestSeq !== detailRequestSeqRef.current) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '会话已切换，旧详情任务已停止'
+        })
+        return
+      }
       if (result.success && result.detail) {
         setSessionDetail((prev) => ({
           wxid: normalizedSessionId,
@@ -1170,6 +1198,10 @@ function ChatPage(props: ChatPageProps) {
     }
 
     try {
+      updateBackgroundTask(taskId, {
+        detail: '正在读取补充信息与导出统计',
+        progressText: '补充统计'
+      })
       const [extraResultSettled, statsResultSettled] = await Promise.allSettled([
         window.electronAPI.chat.getSessionDetailExtra(normalizedSessionId),
         window.electronAPI.chat.getExportSessionStats(
@@ -1178,7 +1210,18 @@ function ChatPage(props: ChatPageProps) {
         )
       ])
 
-      if (requestSeq !== detailRequestSeqRef.current) return
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，补充统计结果未继续写入'
+        })
+        return
+      }
+      if (requestSeq !== detailRequestSeqRef.current) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '会话已切换，旧补充统计任务已停止'
+        })
+        return
+      }
 
       if (extraResultSettled.status === 'fulfilled' && extraResultSettled.value.success) {
         const detail = extraResultSettled.value.detail
@@ -1214,8 +1257,15 @@ function ChatPage(props: ChatPageProps) {
           })
         }
       }
+      finishBackgroundTask(taskId, 'completed', {
+        detail: '聊天页会话详情统计完成',
+        progressText: '已完成'
+      })
     } catch (e) {
       console.error('加载会话详情补充统计失败:', e)
+      finishBackgroundTask(taskId, 'failed', {
+        detail: String(e)
+      })
     } finally {
       if (requestSeq === detailRequestSeqRef.current) {
         setIsLoadingDetailExtra(false)
@@ -1228,13 +1278,31 @@ function ChatPage(props: ChatPageProps) {
     if (!normalizedSessionId || isLoadingRelationStats) return
 
     const requestSeq = detailRequestSeqRef.current
+    const taskId = registerBackgroundTask({
+      sourcePage: 'chat',
+      title: '聊天页关系统计补算',
+      detail: `正在补算 ${normalizedSessionId} 的共同好友与关联数据`,
+      progressText: '关系统计',
+      cancelable: true
+    })
     setIsLoadingRelationStats(true)
     try {
       const relationResult = await window.electronAPI.chat.getExportSessionStats(
         [normalizedSessionId],
         { includeRelations: true, forceRefresh: true, preferAccurateSpecialTypes: true }
       )
-      if (requestSeq !== detailRequestSeqRef.current) return
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，当前关系统计查询结束后未继续刷新'
+        })
+        return
+      }
+      if (requestSeq !== detailRequestSeqRef.current) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '会话已切换，旧关系统计任务已停止'
+        })
+        return
+      }
 
       const metric = relationResult.success && relationResult.data
         ? relationResult.data[normalizedSessionId] as SessionExportMetric | undefined
@@ -1254,11 +1322,26 @@ function ChatPage(props: ChatPageProps) {
         setIsRefreshingDetailStats(true)
         void (async () => {
           try {
+            updateBackgroundTask(taskId, {
+              detail: '正在刷新关系统计结果',
+              progressText: '关系统计刷新'
+            })
             const freshResult = await window.electronAPI.chat.getExportSessionStats(
               [normalizedSessionId],
               { includeRelations: true, forceRefresh: true, preferAccurateSpecialTypes: true }
             )
-            if (requestSeq !== detailRequestSeqRef.current) return
+            if (isBackgroundTaskCancelRequested(taskId)) {
+              finishBackgroundTask(taskId, 'canceled', {
+                detail: '已停止后续加载，刷新结果未继续写入'
+              })
+              return
+            }
+            if (requestSeq !== detailRequestSeqRef.current) {
+              finishBackgroundTask(taskId, 'canceled', {
+                detail: '会话已切换，旧关系统计刷新任务已停止'
+              })
+              return
+            }
             if (freshResult.success && freshResult.data) {
               const freshMetric = freshResult.data[normalizedSessionId] as SessionExportMetric | undefined
               const freshMeta = freshResult.cache?.[normalizedSessionId] as SessionExportCacheMeta | undefined
@@ -1266,17 +1349,32 @@ function ChatPage(props: ChatPageProps) {
                 applySessionDetailStats(normalizedSessionId, freshMetric, freshMeta, true)
               }
             }
+            finishBackgroundTask(taskId, 'completed', {
+              detail: '聊天页关系统计补算完成',
+              progressText: '已完成'
+            })
           } catch (error) {
             console.error('刷新会话关系统计失败:', error)
+            finishBackgroundTask(taskId, 'failed', {
+              detail: String(error)
+            })
           } finally {
             if (requestSeq === detailRequestSeqRef.current) {
               setIsRefreshingDetailStats(false)
             }
           }
         })()
+      } else {
+        finishBackgroundTask(taskId, 'completed', {
+          detail: '聊天页关系统计补算完成',
+          progressText: '已完成'
+        })
       }
     } catch (error) {
       console.error('加载会话关系统计失败:', error)
+      finishBackgroundTask(taskId, 'failed', {
+        detail: String(error)
+      })
     } finally {
       if (requestSeq === detailRequestSeqRef.current) {
         setIsLoadingRelationStats(false)
diff --git a/src/pages/ExportPage.scss b/src/pages/ExportPage.scss
index d9c66df..6c2b112 100644
--- a/src/pages/ExportPage.scss
+++ b/src/pages/ExportPage.scss
@@ -254,6 +254,168 @@
   }
 }
 
+.session-load-detail-summary {
+  padding: 12px 12px 0;
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.session-load-detail-summary-text {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  color: var(--text-secondary);
+
+  strong {
+    font-size: 18px;
+    color: var(--text-primary);
+  }
+
+  em {
+    font-style: normal;
+    color: var(--text-tertiary);
+  }
+}
+
+.session-load-detail-note {
+  margin: 8px 12px 0;
+  font-size: 12px;
+  line-height: 1.6;
+  color: var(--text-tertiary);
+}
+
+.session-load-detail-stop-btn,
+.session-load-detail-task-stop-btn {
+  border: 1px solid color-mix(in srgb, var(--danger, #ef4444) 45%, var(--border-color));
+  border-radius: 8px;
+  background: color-mix(in srgb, var(--danger, #ef4444) 8%, var(--bg-secondary));
+  color: color-mix(in srgb, var(--danger, #ef4444) 85%, var(--text-primary));
+  cursor: pointer;
+  white-space: nowrap;
+
+  &:disabled {
+    opacity: 0.55;
+    cursor: not-allowed;
+  }
+}
+
+.session-load-detail-stop-btn {
+  padding: 8px 12px;
+  font-size: 12px;
+}
+
+.session-load-detail-task-list {
+  padding: 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.session-load-detail-task-item {
+  border: 1px solid color-mix(in srgb, var(--border-color) 72%, transparent);
+  border-radius: 10px;
+  background: color-mix(in srgb, var(--bg-primary) 86%, var(--bg-secondary));
+  padding: 10px 12px;
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 12px;
+
+  &.status-cancel_requested {
+    border-color: color-mix(in srgb, var(--warning, #f59e0b) 36%, var(--border-color));
+  }
+
+  &.status-failed {
+    border-color: color-mix(in srgb, var(--danger, #ef4444) 36%, var(--border-color));
+  }
+}
+
+.session-load-detail-task-main {
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+
+  p {
+    margin: 0;
+    font-size: 12px;
+    line-height: 1.55;
+    color: var(--text-secondary);
+  }
+}
+
+.session-load-detail-task-title-row {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px;
+  font-size: 12px;
+  color: var(--text-secondary);
+
+  strong {
+    font-size: 13px;
+    color: var(--text-primary);
+  }
+}
+
+.session-load-detail-task-source {
+  padding: 2px 8px;
+  border-radius: 999px;
+  background: var(--bg-secondary);
+  color: var(--text-secondary);
+}
+
+.session-load-detail-task-status {
+  padding: 2px 8px;
+  border-radius: 999px;
+  background: color-mix(in srgb, var(--bg-secondary) 80%, transparent);
+  color: var(--text-secondary);
+
+  &.status-running {
+    color: var(--primary);
+    background: rgba(var(--primary-rgb), 0.1);
+  }
+
+  &.status-cancel_requested {
+    color: #b45309;
+    background: rgba(245, 158, 11, 0.14);
+  }
+
+  &.status-completed {
+    color: #166534;
+    background: rgba(34, 197, 94, 0.14);
+  }
+
+  &.status-failed {
+    color: #b91c1c;
+    background: rgba(239, 68, 68, 0.14);
+  }
+}
+
+.session-load-detail-task-meta {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 12px;
+  font-size: 11px;
+  color: var(--text-tertiary);
+}
+
+.session-load-detail-task-stop-btn {
+  padding: 7px 10px;
+  font-size: 12px;
+  flex-shrink: 0;
+}
+
+.session-load-detail-empty {
+  padding: 12px;
+  font-size: 12px;
+  color: var(--text-tertiary);
+}
+
 .session-load-detail-table {
   display: flex;
   flex-direction: column;
diff --git a/src/pages/ExportPage.tsx b/src/pages/ExportPage.tsx
index 7a8dc3c..956c4f2 100644
--- a/src/pages/ExportPage.tsx
+++ b/src/pages/ExportPage.tsx
@@ -30,6 +30,7 @@ import {
 } from 'lucide-react'
 import type { ChatSession as AppChatSession, ContactInfo } from '../types/models'
 import type { ExportOptions as ElectronExportOptions, ExportProgress } from '../types/electron'
+import type { BackgroundTaskRecord } from '../types/backgroundTask'
 import * as configService from '../services/config'
 import {
   emitExportSessionStatus,
@@ -37,6 +38,11 @@ import {
   onExportSessionStatusRequest,
   onOpenSingleExport
 } from '../services/exportBridge'
+import {
+  requestCancelBackgroundTask,
+  requestCancelBackgroundTasks,
+  subscribeBackgroundTasks
+} from '../services/backgroundTaskMonitor'
 import { useContactTypeCountsStore } from '../stores/contactTypeCountsStore'
 import { SnsPostItem } from '../components/Sns/SnsPostItem'
 import { ContactSnsTimelineDialog } from '../components/Sns/ContactSnsTimelineDialog'
@@ -176,6 +182,24 @@ const contentTypeLabels: Record<ContentType, string> = {
   emoji: '表情包'
 }
 
+const backgroundTaskSourceLabels: Record<string, string> = {
+  export: '导出页',
+  chat: '聊天页',
+  analytics: '分析页',
+  sns: '朋友圈页',
+  groupAnalytics: '群分析页',
+  annualReport: '年度报告',
+  other: '其他页面'
+}
+
+const backgroundTaskStatusLabels: Record<BackgroundTaskRecord['status'], string> = {
+  running: '运行中',
+  cancel_requested: '停止中',
+  completed: '已完成',
+  failed: '失败',
+  canceled: '已停止'
+}
+
 const conversationTabLabels: Record<ConversationTab, string> = {
   private: '私聊',
   group: '群聊',
@@ -1422,6 +1446,7 @@ function ExportPage() {
   const [sessionMutualFriendsMetrics, setSessionMutualFriendsMetrics] = useState<Record<string, SessionMutualFriendsMetric>>({})
   const [sessionMutualFriendsDialogTarget, setSessionMutualFriendsDialogTarget] = useState<SessionSnsTimelineTarget | null>(null)
   const [sessionMutualFriendsSearch, setSessionMutualFriendsSearch] = useState('')
+  const [backgroundTasks, setBackgroundTasks] = useState<BackgroundTaskRecord[]>([])
 
   const [exportFolder, setExportFolder] = useState('')
   const [writeLayout, setWriteLayout] = useState<configService.ExportWriteLayout>('B')
@@ -1911,6 +1936,10 @@ function ExportPage() {
     return () => window.clearInterval(timer)
   }, [contactsList.length, isContactsListLoading, contactsLoadIssue])
 
+  useEffect(() => {
+    return subscribeBackgroundTasks(setBackgroundTasks)
+  }, [])
+
   useEffect(() => {
     tasksRef.current = tasks
   }, [tasks])
@@ -5499,6 +5528,16 @@ function ExportPage() {
       alert('复制失败，请手动复制诊断信息')
     }
   }, [contactsDiagnosticsText])
+  const handleCancelBackgroundTask = useCallback((taskId: string) => {
+    requestCancelBackgroundTask(taskId)
+  }, [])
+  const handleCancelAllNonExportTasks = useCallback(() => {
+    requestCancelBackgroundTasks(task => (
+      task.sourcePage !== 'export' &&
+      task.cancelable &&
+      (task.status === 'running' || task.status === 'cancel_requested')
+    ))
+  }, [])
 
   const sessionContactsUpdatedAtLabel = useMemo(() => {
     if (!sessionContactsUpdatedAt) return ''
@@ -5586,6 +5625,21 @@ function ExportPage() {
   const contactsBottomScrollbarInnerStyle = useMemo<CSSProperties>(() => ({
     width: `${Math.max(contactsHorizontalScrollMetrics.contentWidth, contactsHorizontalScrollMetrics.viewportWidth)}px`
   }), [contactsHorizontalScrollMetrics.contentWidth, contactsHorizontalScrollMetrics.viewportWidth])
+  const nonExportBackgroundTasks = useMemo(() => (
+    backgroundTasks.filter(task => task.sourcePage !== 'export')
+  ), [backgroundTasks])
+  const runningNonExportTaskCount = useMemo(() => (
+    nonExportBackgroundTasks.filter(task => task.status === 'running' || task.status === 'cancel_requested').length
+  ), [nonExportBackgroundTasks])
+  const cancelableNonExportTaskCount = useMemo(() => (
+    nonExportBackgroundTasks.filter(task => (
+      task.cancelable &&
+      (task.status === 'running' || task.status === 'cancel_requested')
+    )).length
+  ), [nonExportBackgroundTasks])
+  const nonExportBackgroundTasksUpdatedAt = useMemo(() => (
+    nonExportBackgroundTasks.reduce((latest, task) => Math.max(latest, task.updatedAt || 0), 0)
+  ), [nonExportBackgroundTasks])
   const sessionLoadDetailUpdatedAt = useMemo(() => {
     let latest = 0
     for (const row of sessionLoadDetailRows) {
@@ -6422,6 +6476,67 @@ function ExportPage() {
                 </div>
 
                 <div className="session-load-detail-body">
+                  <section className="session-load-detail-block">
+                    <h5>其他页面后台任务</h5>
+                    <div className="session-load-detail-summary">
+                      <div className="session-load-detail-summary-text">
+                        <strong>{runningNonExportTaskCount}</strong>
+                        <span>个任务正在占用后台读取资源</span>
+                        {nonExportBackgroundTasksUpdatedAt > 0 && (
+                          <em>最近更新时间 {new Date(nonExportBackgroundTasksUpdatedAt).toLocaleTimeString('zh-CN', { hour12: false })}</em>
+                        )}
+                      </div>
+                      <button
+                        type="button"
+                        className="session-load-detail-stop-btn"
+                        onClick={handleCancelAllNonExportTasks}
+                        disabled={cancelableNonExportTaskCount === 0}
+                      >
+                        中断其他页面加载
+                      </button>
+                    </div>
+                    <p className="session-load-detail-note">
+                      停止请求会阻止其他页面继续发起后续统计或补算；当前已经发出的单次查询，会在返回后结束。
+                    </p>
+                    {nonExportBackgroundTasks.length > 0 ? (
+                      <div className="session-load-detail-task-list">
+                        {nonExportBackgroundTasks.map((task) => (
+                          <div key={task.id} className={`session-load-detail-task-item status-${task.status}`}>
+                            <div className="session-load-detail-task-main">
+                              <div className="session-load-detail-task-title-row">
+                                <span className="session-load-detail-task-source">
+                                  {backgroundTaskSourceLabels[task.sourcePage] || backgroundTaskSourceLabels.other}
+                                </span>
+                                <strong>{task.title}</strong>
+                                <span className={`session-load-detail-task-status status-${task.status}`}>
+                                  {backgroundTaskStatusLabels[task.status]}
+                                </span>
+                              </div>
+                              <p>{task.detail || '暂无详细说明'}</p>
+                              <div className="session-load-detail-task-meta">
+                                <span>开始：{formatLoadDetailTime(task.startedAt)}</span>
+                                <span>更新：{formatLoadDetailTime(task.updatedAt)}</span>
+                                {task.progressText && <span>进度：{task.progressText}</span>}
+                              </div>
+                            </div>
+                            <button
+                              type="button"
+                              className="session-load-detail-task-stop-btn"
+                              onClick={() => handleCancelBackgroundTask(task.id)}
+                              disabled={!task.cancelable || (task.status !== 'running' && task.status !== 'cancel_requested')}
+                            >
+                              停止
+                            </button>
+                          </div>
+                        ))}
+                      </div>
+                    ) : (
+                      <div className="session-load-detail-empty">
+                        当前没有检测到其他页面后台任务
+                      </div>
+                    )}
+                  </section>
+
                   <section className="session-load-detail-block">
                     <h5>总消息数</h5>
                     <div className="session-load-detail-table">
diff --git a/src/pages/GroupAnalyticsPage.tsx b/src/pages/GroupAnalyticsPage.tsx
index 05a616d..4d2c65e 100644
--- a/src/pages/GroupAnalyticsPage.tsx
+++ b/src/pages/GroupAnalyticsPage.tsx
@@ -5,6 +5,12 @@ import { Avatar } from '../components/Avatar'
 import ReactECharts from 'echarts-for-react'
 import DateRangePicker from '../components/DateRangePicker'
 import * as configService from '../services/config'
+import {
+  finishBackgroundTask,
+  isBackgroundTaskCancelRequested,
+  registerBackgroundTask,
+  updateBackgroundTask
+} from '../services/backgroundTaskMonitor'
 import './GroupAnalyticsPage.scss'
 
 interface GroupChatInfo {
@@ -176,15 +182,39 @@ function GroupAnalyticsPage() {
   }, [])
 
   const loadGroups = useCallback(async () => {
+    const taskId = registerBackgroundTask({
+      sourcePage: 'groupAnalytics',
+      title: '群列表加载',
+      detail: '正在读取群聊列表',
+      progressText: '群聊列表',
+      cancelable: true
+    })
     setIsLoading(true)
     try {
       const result = await window.electronAPI.groupAnalytics.getGroupChats()
+      if (isBackgroundTaskCancelRequested(taskId)) {
+        finishBackgroundTask(taskId, 'canceled', {
+          detail: '已停止后续加载，群聊列表结果未继续写入'
+        })
+        return
+      }
       if (result.success && result.data) {
         setGroups(result.data)
         setFilteredGroups(result.data)
+        finishBackgroundTask(taskId, 'completed', {
+          detail: `群聊列表加载完成，共 ${result.data.length} 个群`,
+          progressText: `${result.data.length} 个群`
+        })
+      } else {
+        finishBackgroundTask(taskId, 'failed', {
+          detail: result.error || '加载群聊列表失败'
+        })
       }
     } catch (e) {
       console.error(e)
+      finishBackgroundTask(taskId, 'failed', {
+        detail: String(e)
+      })
     } finally {
       setIsLoading(false)
     }
@@ -314,6 +344,13 @@ function GroupAnalyticsPage() {
 
   const loadFunctionData = async (func: AnalysisFunction) => {
     if (!selectedGroup) return
+    const taskId = registerBackgroundTask({
+      sourcePage: 'groupAnalytics',
+      title: `群分析：${func}`,
+      detail: `正在读取 ${selectedGroup.displayName || selectedGroup.username} 的分析数据`,
+      progressText: func,
+      cancelable: true
+    })
     setFunctionLoading(true)
 
     // 计算时间戳
@@ -323,33 +360,96 @@ function GroupAnalyticsPage() {
     try {
       switch (func) {
         case 'members': {
+          updateBackgroundTask(taskId, {
+            detail: '正在读取群成员列表',
+            progressText: '成员列表'
+          })
           const result = await window.electronAPI.groupAnalytics.getGroupMembers(selectedGroup.username)
+          if (isBackgroundTaskCancelRequested(taskId)) {
+            finishBackgroundTask(taskId, 'canceled', { detail: '已停止后续加载，群成员列表未继续写入' })
+            return
+          }
           if (result.success && result.data) setMembers(result.data)
+          finishBackgroundTask(taskId, result.success ? 'completed' : 'failed', {
+            detail: result.success ? `群成员列表加载完成，共 ${result.data?.length || 0} 人` : (result.error || '读取群成员列表失败'),
+            progressText: result.success ? `${result.data?.length || 0} 人` : '失败'
+          })
           break
         }
         case 'memberExport': {
+          updateBackgroundTask(taskId, {
+            detail: '正在读取导出成员列表',
+            progressText: '成员导出'
+          })
           const result = await window.electronAPI.groupAnalytics.getGroupMembers(selectedGroup.username)
+          if (isBackgroundTaskCancelRequested(taskId)) {
+            finishBackgroundTask(taskId, 'canceled', { detail: '已停止后续加载，成员导出列表未继续写入' })
+            return
+          }
           if (result.success && result.data) setMembers(result.data)
+          finishBackgroundTask(taskId, result.success ? 'completed' : 'failed', {
+            detail: result.success ? `成员导出列表加载完成，共 ${result.data?.length || 0} 人` : (result.error || '读取成员导出列表失败'),
+            progressText: result.success ? `${result.data?.length || 0} 人` : '失败'
+          })
           break
         }
         case 'ranking': {
+          updateBackgroundTask(taskId, {
+            detail: '正在计算群消息排行',
+            progressText: '消息排行'
+          })
           const result = await window.electronAPI.groupAnalytics.getGroupMessageRanking(selectedGroup.username, 20, startTime, endTime)
+          if (isBackgroundTaskCancelRequested(taskId)) {
+            finishBackgroundTask(taskId, 'canceled', { detail: '已停止后续加载，群消息排行未继续写入' })
+            return
+          }
           if (result.success && result.data) setRankings(result.data)
+          finishBackgroundTask(taskId, result.success ? 'completed' : 'failed', {
+            detail: result.success ? `群消息排行加载完成，共 ${result.data?.length || 0} 条` : (result.error || '读取群消息排行失败'),
+            progressText: result.success ? `${result.data?.length || 0} 条` : '失败'
+          })
           break
         }
         case 'activeHours': {
+          updateBackgroundTask(taskId, {
+            detail: '正在计算群活跃时段',
+            progressText: '活跃时段'
+          })
           const result = await window.electronAPI.groupAnalytics.getGroupActiveHours(selectedGroup.username, startTime, endTime)
+          if (isBackgroundTaskCancelRequested(taskId)) {
+            finishBackgroundTask(taskId, 'canceled', { detail: '已停止后续加载，群活跃时段未继续写入' })
+            return
+          }
           if (result.success && result.data) setActiveHours(result.data.hourlyDistribution)
+          finishBackgroundTask(taskId, result.success ? 'completed' : 'failed', {
+            detail: result.success ? '群活跃时段加载完成' : (result.error || '读取群活跃时段失败'),
+            progressText: result.success ? '24 小时分布' : '失败'
+          })
           break
         }
         case 'mediaStats': {
+          updateBackgroundTask(taskId, {
+            detail: '正在统计群消息类型',
+            progressText: '消息类型'
+          })
           const result = await window.electronAPI.groupAnalytics.getGroupMediaStats(selectedGroup.username, startTime, endTime)
+          if (isBackgroundTaskCancelRequested(taskId)) {
+            finishBackgroundTask(taskId, 'canceled', { detail: '已停止后续加载，群消息类型统计未继续写入' })
+            return
+          }
           if (result.success && result.data) setMediaStats(result.data)
+          finishBackgroundTask(taskId, result.success ? 'completed' : 'failed', {
+            detail: result.success ? `群消息类型统计完成，共 ${result.data?.total || 0} 条` : (result.error || '读取群消息类型统计失败'),
+            progressText: result.success ? `${result.data?.total || 0} 条` : '失败'
+          })
           break
         }
       }
     } catch (e) {
       console.error(e)
+      finishBackgroundTask(taskId, 'failed', {
+        detail: String(e)
+      })
     } finally {
       setFunctionLoading(false)
     }
diff --git a/src/pages/SnsPage.tsx b/src/pages/SnsPage.tsx
index 0482240..52ca0b7 100644
--- a/src/pages/SnsPage.tsx
+++ b/src/pages/SnsPage.tsx
@@ -9,6 +9,12 @@ import type { ContactSnsTimelineTarget } from '../components/Sns/contactSnsTimel
 import JumpToDatePopover from '../components/JumpToDatePopover'
 import { ExportDateRangeDialog } from '../components/Export/ExportDateRangeDialog'
 import * as configService from '../services/config'
+import {
+    finishBackgroundTask,
+    isBackgroundTaskCancelRequested,
+    registerBackgroundTask,
+    updateBackgroundTask
+} from '../services/backgroundTaskMonitor'
 import {
     createExportDateRangeSelectionFromPreset,
     getExportDateRangeLabel,
@@ -728,9 +734,23 @@ export default function SnsPage() {
         })
         if (pendingTargets.length === 0) return
 
+        const taskId = registerBackgroundTask({
+            sourcePage: 'sns',
+            title: '朋友圈联系人计数补算',
+            detail: `正在补算 ${pendingTargets.length} 个联系人朋友圈条数`,
+            progressText: `${preResolved}/${totalTargets}`,
+            cancelable: true
+        })
+
         let normalizedCounts: Record<string, number> = {}
         try {
             const result = await window.electronAPI.sns.getUserPostCounts()
+            if (isBackgroundTaskCancelRequested(taskId)) {
+                finishBackgroundTask(taskId, 'canceled', {
+                    detail: '已停止后续加载，当前计数查询结束后不再继续分批写入'
+                })
+                return
+            }
             if (runToken !== contactsCountHydrationTokenRef.current) return
             if (result.success && result.counts) {
                 normalizedCounts = Object.fromEntries(
@@ -747,12 +767,28 @@ export default function SnsPage() {
             }
         } catch (error) {
             console.error('Failed to load contact post counts:', error)
+            finishBackgroundTask(taskId, 'failed', {
+                detail: String(error)
+            })
+            return
         }
 
         let resolved = preResolved
         let cursor = 0
         const applyBatch = () => {
             if (runToken !== contactsCountHydrationTokenRef.current) return
+            if (isBackgroundTaskCancelRequested(taskId)) {
+                finishBackgroundTask(taskId, 'canceled', {
+                    detail: `已停止后续加载，已完成 ${resolved}/${totalTargets}`
+                })
+                contactsCountBatchTimerRef.current = null
+                setContactsCountProgress({
+                    resolved,
+                    total: totalTargets,
+                    running: false
+                })
+                return
+            }
 
             const batch = pendingTargets.slice(cursor, cursor + CONTACT_COUNT_BATCH_SIZE)
             if (batch.length === 0) {
@@ -762,6 +798,10 @@ export default function SnsPage() {
                     running: false
                 })
                 contactsCountBatchTimerRef.current = null
+                finishBackgroundTask(taskId, 'completed', {
+                    detail: '联系人朋友圈条数补算完成',
+                    progressText: `${totalTargets}/${totalTargets}`
+                })
                 return
             }
 
@@ -789,6 +829,10 @@ export default function SnsPage() {
                 total: totalTargets,
                 running: resolved < totalTargets
             })
+            updateBackgroundTask(taskId, {
+                detail: `已完成 ${resolved}/${totalTargets} 个联系人朋友圈条数补算`,
+                progressText: `${resolved}/${totalTargets}`
+            })
 
             if (cursor < totalTargets) {
                 contactsCountBatchTimerRef.current = window.setTimeout(applyBatch, CONTACT_COUNT_SORT_DEBOUNCE_MS)
@@ -803,6 +847,13 @@ export default function SnsPage() {
     // Load Contacts（先按最近会话显示联系人，再异步统计朋友圈条数并增量排序）
     const loadContacts = useCallback(async () => {
         const requestToken = ++contactsLoadTokenRef.current
+        const taskId = registerBackgroundTask({
+            sourcePage: 'sns',
+            title: '朋友圈联系人列表加载',
+            detail: '准备读取联系人缓存与最近会话',
+            progressText: '初始化',
+            cancelable: true
+        })
         stopContactsCountHydration(true)
         setContactsLoading(true)
         try {
@@ -845,10 +896,20 @@ export default function SnsPage() {
                 })
             }
 
+            updateBackgroundTask(taskId, {
+                detail: '正在读取联系人与最近会话数据',
+                progressText: '联系人快照'
+            })
             const [contactsResult, sessionsResult] = await Promise.all([
                 window.electronAPI.chat.getContacts(),
                 window.electronAPI.chat.getSessions()
             ])
+            if (isBackgroundTaskCancelRequested(taskId)) {
+                finishBackgroundTask(taskId, 'canceled', {
+                    detail: '已停止后续加载，当前联系人查询结束后未继续补齐'
+                })
+                return
+            }
             const contactMap = new Map<string, Contact>()
             const sessionTimestampMap = new Map<string, number>()
 
@@ -904,7 +965,17 @@ export default function SnsPage() {
 
             // 用 enrichSessionsContactInfo 统一补充头像和显示名
             if (allUsernames.length > 0) {
+                updateBackgroundTask(taskId, {
+                    detail: '正在补齐联系人显示名与头像',
+                    progressText: '联系人补齐'
+                })
                 const enriched = await window.electronAPI.chat.enrichSessionsContactInfo(allUsernames)
+                if (isBackgroundTaskCancelRequested(taskId)) {
+                    finishBackgroundTask(taskId, 'canceled', {
+                        detail: '已停止后续加载，联系人补齐未继续写入'
+                    })
+                    return
+                }
                 if (enriched.success && enriched.contacts) {
                     contactsList = contactsList.map((contact) => {
                         const extra = enriched.contacts?.[contact.username]
@@ -931,10 +1002,17 @@ export default function SnsPage() {
                     })
                 }
             }
+            finishBackgroundTask(taskId, 'completed', {
+                detail: `朋友圈联系人列表加载完成，共 ${contactsList.length} 人`,
+                progressText: `${contactsList.length} 人`
+            })
         } catch (error) {
             if (requestToken !== contactsLoadTokenRef.current) return
             console.error('Failed to load contacts:', error)
             stopContactsCountHydration(true)
+            finishBackgroundTask(taskId, 'failed', {
+                detail: String(error)
+            })
         } finally {
             if (requestToken === contactsLoadTokenRef.current) {
                 setContactsLoading(false)
diff --git a/src/services/backgroundTaskMonitor.ts b/src/services/backgroundTaskMonitor.ts
new file mode 100644
index 0000000..2b41f6d
--- /dev/null
+++ b/src/services/backgroundTaskMonitor.ts
@@ -0,0 +1,149 @@
+import type {
+  BackgroundTaskInput,
+  BackgroundTaskRecord,
+  BackgroundTaskStatus,
+  BackgroundTaskUpdate
+} from '../types/backgroundTask'
+
+type BackgroundTaskListener = (tasks: BackgroundTaskRecord[]) => void
+
+const tasks = new Map<string, BackgroundTaskRecord>()
+const cancelHandlers = new Map<string, () => void | Promise<void>>()
+const listeners = new Set<BackgroundTaskListener>()
+let taskSequence = 0
+
+const ACTIVE_STATUSES = new Set<BackgroundTaskStatus>(['running', 'cancel_requested'])
+const MAX_SETTLED_TASKS = 24
+
+const buildTaskId = (): string => {
+  taskSequence += 1
+  return `bg-task-${Date.now()}-${taskSequence}`
+}
+
+const notifyListeners = () => {
+  const snapshot = getBackgroundTaskSnapshot()
+  for (const listener of listeners) {
+    listener(snapshot)
+  }
+}
+
+const pruneSettledTasks = () => {
+  const settledTasks = [...tasks.values()]
+    .filter(task => !ACTIVE_STATUSES.has(task.status))
+    .sort((a, b) => (b.finishedAt || b.updatedAt) - (a.finishedAt || a.updatedAt))
+
+  for (const staleTask of settledTasks.slice(MAX_SETTLED_TASKS)) {
+    tasks.delete(staleTask.id)
+  }
+}
+
+export const getBackgroundTaskSnapshot = (): BackgroundTaskRecord[] => (
+  [...tasks.values()].sort((a, b) => {
+    const aActive = ACTIVE_STATUSES.has(a.status) ? 1 : 0
+    const bActive = ACTIVE_STATUSES.has(b.status) ? 1 : 0
+    if (aActive !== bActive) return bActive - aActive
+    return b.updatedAt - a.updatedAt
+  })
+)
+
+export const subscribeBackgroundTasks = (listener: BackgroundTaskListener): (() => void) => {
+  listeners.add(listener)
+  listener(getBackgroundTaskSnapshot())
+  return () => {
+    listeners.delete(listener)
+  }
+}
+
+export const registerBackgroundTask = (input: BackgroundTaskInput): string => {
+  const now = Date.now()
+  const taskId = buildTaskId()
+  tasks.set(taskId, {
+    id: taskId,
+    sourcePage: input.sourcePage,
+    title: input.title,
+    detail: input.detail,
+    progressText: input.progressText,
+    cancelable: input.cancelable !== false,
+    cancelRequested: false,
+    status: 'running',
+    startedAt: now,
+    updatedAt: now
+  })
+  if (input.onCancel) {
+    cancelHandlers.set(taskId, input.onCancel)
+  }
+  pruneSettledTasks()
+  notifyListeners()
+  return taskId
+}
+
+export const updateBackgroundTask = (taskId: string, patch: BackgroundTaskUpdate): void => {
+  const existing = tasks.get(taskId)
+  if (!existing) return
+  const nextStatus = patch.status || existing.status
+  const nextUpdatedAt = Date.now()
+  tasks.set(taskId, {
+    ...existing,
+    ...patch,
+    status: nextStatus,
+    updatedAt: nextUpdatedAt,
+    finishedAt: ACTIVE_STATUSES.has(nextStatus) ? undefined : (existing.finishedAt || nextUpdatedAt)
+  })
+  pruneSettledTasks()
+  notifyListeners()
+}
+
+export const finishBackgroundTask = (
+  taskId: string,
+  status: Extract<BackgroundTaskStatus, 'completed' | 'failed' | 'canceled'>,
+  patch?: Omit<BackgroundTaskUpdate, 'status'>
+): void => {
+  const existing = tasks.get(taskId)
+  if (!existing) return
+  const now = Date.now()
+  tasks.set(taskId, {
+    ...existing,
+    ...patch,
+    status,
+    updatedAt: now,
+    finishedAt: now,
+    cancelRequested: status === 'canceled' ? true : existing.cancelRequested
+  })
+  cancelHandlers.delete(taskId)
+  pruneSettledTasks()
+  notifyListeners()
+}
+
+export const requestCancelBackgroundTask = (taskId: string): boolean => {
+  const existing = tasks.get(taskId)
+  if (!existing || !existing.cancelable || !ACTIVE_STATUSES.has(existing.status)) return false
+  tasks.set(taskId, {
+    ...existing,
+    status: 'cancel_requested',
+    cancelRequested: true,
+    detail: existing.detail || '停止请求已发出，当前查询完成后会结束后续加载',
+    updatedAt: Date.now()
+  })
+  const cancelHandler = cancelHandlers.get(taskId)
+  if (cancelHandler) {
+    void Promise.resolve(cancelHandler()).catch(() => {})
+  }
+  notifyListeners()
+  return true
+}
+
+export const requestCancelBackgroundTasks = (predicate: (task: BackgroundTaskRecord) => boolean): number => {
+  let canceledCount = 0
+  for (const task of tasks.values()) {
+    if (!predicate(task)) continue
+    if (requestCancelBackgroundTask(task.id)) {
+      canceledCount += 1
+    }
+  }
+  return canceledCount
+}
+
+export const isBackgroundTaskCancelRequested = (taskId: string): boolean => {
+  const task = tasks.get(taskId)
+  return Boolean(task?.cancelRequested)
+}
diff --git a/src/types/backgroundTask.ts b/src/types/backgroundTask.ts
new file mode 100644
index 0000000..df8315e
--- /dev/null
+++ b/src/types/backgroundTask.ts
@@ -0,0 +1,46 @@
+export type BackgroundTaskSourcePage =
+  | 'export'
+  | 'chat'
+  | 'analytics'
+  | 'sns'
+  | 'groupAnalytics'
+  | 'annualReport'
+  | 'other'
+
+export type BackgroundTaskStatus =
+  | 'running'
+  | 'cancel_requested'
+  | 'completed'
+  | 'failed'
+  | 'canceled'
+
+export interface BackgroundTaskRecord {
+  id: string
+  sourcePage: BackgroundTaskSourcePage
+  title: string
+  detail?: string
+  progressText?: string
+  cancelable: boolean
+  cancelRequested: boolean
+  status: BackgroundTaskStatus
+  startedAt: number
+  updatedAt: number
+  finishedAt?: number
+}
+
+export interface BackgroundTaskInput {
+  sourcePage: BackgroundTaskSourcePage
+  title: string
+  detail?: string
+  progressText?: string
+  cancelable?: boolean
+  onCancel?: () => void | Promise<void>
+}
+
+export interface BackgroundTaskUpdate {
+  title?: string
+  detail?: string
+  progressText?: string
+  status?: BackgroundTaskStatus
+  cancelable?: boolean
+}