diff --git a/internal/service/moment_service.go b/internal/service/moment_service.go
index d382ed2..781ee56 100644
--- a/internal/service/moment_service.go
+++ b/internal/service/moment_service.go
@@ -8,6 +8,7 @@ import (
 	"encoding/json"
 	"errors"
 	"log"
+	"time"
 	"xk-websocket-v2/internal/model"
 
 	"gorm.io/gorm"
@@ -688,9 +689,25 @@ func (s *MomentService) loadNotificationData(notif *model.MomentNotification) {
 
 /**
  * createNotification
- * 功能：创建通知并推送
+ * 功能：创建通知并推送（带去重检查）
  */
 func (s *MomentService) createNotification(toUserID, fromUserID string, momentID uint, notifType int8, commentID *uint) {
+	// 去重检查：5秒内相同的通知视为重复
+	var existing model.MomentNotification
+	query := s.DB.Where(
+		"user_id = ? AND from_user_id = ? AND moment_id = ? AND type = ? AND created_at > ?",
+		toUserID, fromUserID, momentID, notifType, time.Now().Add(-5*time.Second),
+	)
+	// 如果有 commentID，也加入去重条件
+	if commentID != nil {
+		query = query.Where("comment_id = ?", *commentID)
+	}
+	if err := query.First(&existing).Error; err == nil {
+		// 已存在相同通知，跳过创建
+		log.Printf("🔄 跳过重复朋友圈通知: to=%s from=%s moment=%d type=%d", toUserID, fromUserID, momentID, notifType)
+		return
+	}
+
 	notif := &model.MomentNotification{
 		UserID:     toUserID,
 		FromUserID: fromUserID,