diff --git a/.gitignore b/.gitignore
index ae42d85..5cc4ff8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -57,3 +57,4 @@ Thumbs.db
 
 wcdb/
 *info
+*.md
diff --git a/electron/services/analyticsService.ts b/electron/services/analyticsService.ts
index 1153cfb..e9d965e 100644
--- a/electron/services/analyticsService.ts
+++ b/electron/services/analyticsService.ts
@@ -67,6 +67,38 @@ class AnalyticsService {
     return new Set(this.getExcludedUsernamesList())
   }
 
+  private escapeSqlValue(value: string): string {
+    return value.replace(/'/g, "''")
+  }
+
+  private async getAliasMap(usernames: string[]): Promise<Record<string, string>> {
+    const map: Record<string, string> = {}
+    if (usernames.length === 0) return map
+
+    const chunkSize = 200
+    for (let i = 0; i < usernames.length; i += chunkSize) {
+      const chunk = usernames.slice(i, i + chunkSize)
+      const inList = chunk.map((u) => `'${this.escapeSqlValue(u)}'`).join(',')
+      if (!inList) continue
+      const sql = `
+        SELECT username, alias
+        FROM contact
+        WHERE username IN (${inList})
+      `
+      const result = await wcdbService.execQuery('contact', null, sql)
+      if (!result.success || !result.rows) continue
+      for (const row of result.rows as Record<string, any>[]) {
+        const username = row.username || ''
+        const alias = row.alias || ''
+        if (username && alias) {
+          map[username] = alias
+        }
+      }
+    }
+
+    return map
+  }
+
   private cleanAccountDirName(name: string): string {
     const trimmed = name.trim()
     if (!trimmed) return trimmed
@@ -419,7 +451,7 @@ class AnalyticsService {
     }
   }
 
-  async getExcludeCandidates(): Promise<{ success: boolean; data?: Array<{ username: string; displayName: string; avatarUrl?: string }>; error?: string }> {
+  async getExcludeCandidates(): Promise<{ success: boolean; data?: Array<{ username: string; displayName: string; avatarUrl?: string; wechatId?: string }>; error?: string }> {
     try {
       const conn = await this.ensureConnected()
       if (!conn.success || !conn.cleanedWxid) return { success: false, error: conn.error }
@@ -435,9 +467,10 @@ class AnalyticsService {
       }
 
       const usernameList = Array.from(usernames)
-      const [displayNames, avatarUrls] = await Promise.all([
+      const [displayNames, avatarUrls, aliasMap] = await Promise.all([
         wcdbService.getDisplayNames(usernameList),
-        wcdbService.getAvatarUrls(usernameList)
+        wcdbService.getAvatarUrls(usernameList),
+        this.getAliasMap(usernameList)
       ])
 
       const entries = usernameList.map((username) => {
@@ -447,7 +480,9 @@ class AnalyticsService {
         const avatarUrl = avatarUrls.success && avatarUrls.map
           ? avatarUrls.map[username]
           : undefined
-        return { username, displayName, avatarUrl }
+        const alias = aliasMap[username]
+        const wechatId = alias || (!username.startsWith('wxid_') ? username : '')
+        return { username, displayName, avatarUrl, wechatId }
       })
 
       return { success: true, data: entries }
diff --git a/electron/services/exportService.ts b/electron/services/exportService.ts
index 948a2b0..3609f00 100644
--- a/electron/services/exportService.ts
+++ b/electron/services/exportService.ts
@@ -260,7 +260,7 @@ class ExportService {
         }
 
         // 清理昵称：去除前后空白和特殊字符
-        nickname = nickname.trim().replace(/[\x00-\x1F\x7F]/g, '')
+        nickname = this.normalizeGroupNickname(nickname)
 
         // 只保存有效的群昵称（长度 > 0 且 < 50）
         if (nickname && nickname.length > 0 && nickname.length < 50) {
@@ -432,6 +432,15 @@ class ExportService {
     return /^[0-9a-fA-F]+$/.test(s)
   }
 
+  private normalizeGroupNickname(value: string): string {
+    const trimmed = (value || '').trim()
+    if (!trimmed) return ''
+    const cleaned = trimmed.replace(/[\x00-\x1F\x7F]/g, '')
+    if (!cleaned) return ''
+    if (/^[,"'“”‘’，、]+$/.test(cleaned)) return ''
+    return cleaned
+  }
+
   /**
    * 根据用户偏好获取显示名称
    */
@@ -2034,7 +2043,7 @@ class ExportService {
           ? contact.contact.nickName
           : (senderInfo.displayName || senderWxid)
         const senderRemark = contact.success && contact.contact?.remark ? contact.contact.remark : ''
-        const senderGroupNickname = groupNicknamesMap.get(senderWxid?.toLowerCase() || '') || ''
+        const senderGroupNickname = this.normalizeGroupNickname(groupNicknamesMap.get(senderWxid?.toLowerCase() || '') || '')
 
         // 使用用户偏好的显示名称
         const senderDisplayName = this.getPreferredDisplayName(
@@ -2080,7 +2089,7 @@ class ExportService {
         ? sessionContact.contact.remark
         : ''
       const sessionGroupNickname = isGroup
-        ? (groupNicknamesMap.get(sessionId.toLowerCase()) || '')
+        ? this.normalizeGroupNickname(groupNicknamesMap.get(sessionId.toLowerCase()) || '')
         : ''
 
       // 使用用户偏好的显示名称
@@ -2447,7 +2456,7 @@ class ExportService {
 
         // 获取群昵称 (仅群聊且完整列模式)
         if (isGroup && !useCompactColumns && senderWxid) {
-          senderGroupNickname = groupNicknamesMap.get(senderWxid.toLowerCase()) || ''
+          senderGroupNickname = this.normalizeGroupNickname(groupNicknamesMap.get(senderWxid.toLowerCase()) || '')
         }
 
 
diff --git a/package-lock.json b/package-lock.json
index faac1e1..ee1d0f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "weflow",
-  "version": "1.4.4",
+  "version": "1.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "weflow",
-      "version": "1.4.4",
+      "version": "1.5.0",
       "hasInstallScript": true,
       "dependencies": {
         "better-sqlite3": "^12.5.0",
diff --git a/package.json b/package.json
index 534b89f..4ba7a88 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "weflow",
-  "version": "1.4.4",
+  "version": "1.5.0",
   "description": "WeFlow",
   "main": "dist-electron/main.js",
   "author": "cc",
diff --git a/src/pages/AnalyticsPage.tsx b/src/pages/AnalyticsPage.tsx
index 41cebba..9e56515 100644
--- a/src/pages/AnalyticsPage.tsx
+++ b/src/pages/AnalyticsPage.tsx
@@ -11,6 +11,7 @@ interface ExcludeCandidate {
   username: string
   displayName: string
   avatarUrl?: string
+  wechatId?: string
 }
 
 const normalizeUsername = (value: string) => value.trim().toLowerCase()
@@ -167,7 +168,8 @@ function AnalyticsPage() {
     .filter((candidate) => {
       const query = excludeQuery.trim().toLowerCase()
       if (!query) return true
-      const haystack = `${candidate.displayName} ${candidate.username}`.toLowerCase()
+      const wechatId = candidate.wechatId || ''
+      const haystack = `${candidate.displayName} ${candidate.username} ${wechatId}`.toLowerCase()
       return haystack.includes(query)
     })
     .sort((a, b) => {
@@ -464,6 +466,7 @@ function AnalyticsPage() {
                 <div className="exclude-list">
                   {visibleExcludeCandidates.map((candidate) => {
                     const isChecked = draftExcluded.has(normalizeUsername(candidate.username))
+                    const wechatId = candidate.wechatId?.trim() || candidate.username
                     return (
                       <label key={candidate.username} className={`exclude-item ${isChecked ? 'active' : ''}`}>
                         <input
@@ -476,7 +479,7 @@ function AnalyticsPage() {
                         </div>
                         <div className="exclude-info">
                           <span className="exclude-name">{candidate.displayName}</span>
-                          <span className="exclude-username">{candidate.username}</span>
+                          <span className="exclude-username">{wechatId}</span>
                         </div>
                       </label>
                     )
diff --git a/src/types/electron.d.ts b/src/types/electron.d.ts
index 1f5f8eb..4e30d2a 100644
--- a/src/types/electron.d.ts
+++ b/src/types/electron.d.ts
@@ -191,6 +191,7 @@ export interface ElectronAPI {
         username: string
         displayName: string
         avatarUrl?: string
+        wechatId?: string
       }>
       error?: string
     }>