diff --git a/save_token.py b/save_token.py
index f431d7b..8566022 100644
--- a/save_token.py
+++ b/save_token.py
@@ -33,7 +33,12 @@ async def main():
         sts_url = f"{location}&clientSign={client_sign}"
 
         async with s.get(sts_url, headers=headers) as r2:
-            service_token = r2.cookies.get("serviceToken", "").value
+            st_cookie = r2.cookies.get("serviceToken")
+            if not st_cookie:
+                print(f"❌ 错误：未能获取 serviceToken。请检查 PASS_TOKEN 是否过期。")
+                print(f"响应状态码: {r2.status}")
+                return
+            service_token = st_cookie.value
 
         token = {
             "deviceId": device_id,