diff --git a/src/components/GlobalSessionMonitor.tsx b/src/components/GlobalSessionMonitor.tsx
index 9077892..ae86379 100644
--- a/src/components/GlobalSessionMonitor.tsx
+++ b/src/components/GlobalSessionMonitor.tsx
@@ -81,6 +81,11 @@ export function GlobalSessionMonitor() {
     }
 
     const checkForNewMessages = async (oldSessions: ChatSession[], newSessions: ChatSession[]) => {
+        if (!oldSessions || oldSessions.length === 0) {
+            console.log('[NotificationFilter] Skipping check on initial load (empty baseline)')
+            return
+        }
+
         const oldMap = new Map(oldSessions.map(s => [s.username, s]))
 
         for (const newSession of newSessions) {
@@ -140,6 +145,14 @@ export function GlobalSessionMonitor() {
                     }
                 }
 
+                // 新增：如果未读数量没有增加，说明可能是自己在其他设备回复（或者已读），不弹通知
+                const oldUnread = oldSession ? oldSession.unreadCount : 0
+                const newUnread = newSession.unreadCount
+                if (newUnread <= oldUnread) {
+                    // 仅仅是状态同步（如自己在手机上发消息 or 已读），跳过通知
+                    continue
+                }
+
                 let title = newSession.displayName || newSession.username
                 let avatarUrl = newSession.avatarUrl
                 let content = newSession.summary || '[新消息]'