diff --git a/backend/src/main/java/com/designhub/mapper/NotificationMapper.java b/backend/src/main/java/com/designhub/mapper/NotificationMapper.java
index a3d2168..c327937 100644
--- a/backend/src/main/java/com/designhub/mapper/NotificationMapper.java
+++ b/backend/src/main/java/com/designhub/mapper/NotificationMapper.java
@@ -15,7 +15,7 @@ public interface NotificationMapper extends BaseMapper<Notification> {
     /**
      * 批量标记为已读
      */
-    @Update("UPDATE notification SET is_read = 1, read_time = NOW() WHERE receiver_id = #{receiverId} AND is_read = 0 AND deleted = 0")
+    @Update("UPDATE sys_notification SET is_read = 1, read_time = NOW() WHERE receiver_id = #{receiverId} AND is_read = 0 AND deleted = 0")
     int markAllAsRead(@Param("receiverId") Long receiverId);
 
     /**