diff --git a/backend/task_scheduler/app/main.py b/backend/task_scheduler/app/main.py
index 8176c14..39f2746 100644
--- a/backend/task_scheduler/app/main.py
+++ b/backend/task_scheduler/app/main.py
@@ -282,7 +282,7 @@ def _push_signin_result(account_id: str, result: dict, elapsed: float):
         elif status == "completed" and result.get("signed", 0) == 0 and result.get("total", 0) == 0:
             msg = result.get("message", "")
             if "no topics" in msg:
-                lines = [f"⚠️ {remark} 签到失败: 获取超话列表失败（可能被风控或 Cookie 失效）"]
+                lines = [f"⚠️ {remark} Cookie 已失效，请重新扫码添加"]
             elif "no selected" in msg:
                 lines = [f"⚠️ {remark} 签到跳过: 没有选中的超话"]
             else:
@@ -392,9 +392,10 @@ async def _async_do_signin(account_id: str, cron_expr: str = ""):
                 result = await session.execute(select(Account).where(Account.id == acc_id))
                 acc = result.scalar_one_or_none()
                 if acc:
+                    acc.status = "invalid_cookie"
                     acc.last_checked_at = datetime.now()
                     await session.commit()
-            return {"status": "completed", "signed": 0, "message": "no topics"}
+            return {"status": "completed", "signed": 0, "message": "no topics - cookie可能已失效"}
 
         # 如果用户选择了特定超话，只签选中的
         if acc_selected_topics and isinstance(acc_selected_topics, list):