diff --git a/app/routers/wechat_notify_api.py b/app/routers/wechat_notify_api.py
index e4a546e..9120e6e 100644
--- a/app/routers/wechat_notify_api.py
+++ b/app/routers/wechat_notify_api.py
@@ -116,11 +116,16 @@ async def send_card(request: Request):
                     if alarm:
                         alarm_type_code = alarm.alarm_type or ""
                         alarm_snapshot_key = alarm.snapshot_url or ""
-                        if not camera_name or camera_name == "未知":
-                            if alarm.device_id:
-                                camera_service = get_camera_name_service()
-                                camera_info = await camera_service.get_camera_info(alarm.device_id)
-                                camera_name = camera_service.format_display_name(alarm.device_id, camera_info)
+                        camera_name_needs_resolve = (
+                            not camera_name
+                            or camera_name == "未知"
+                            or camera_name == (alarm.device_id or "")
+                            or camera_name.lower().startswith("cam_")
+                        )
+                        if camera_name_needs_resolve and alarm.device_id:
+                            camera_service = get_camera_name_service()
+                            camera_info = await camera_service.get_camera_info(alarm.device_id)
+                            camera_name = camera_service.format_display_name(alarm.device_id, camera_info)
                 finally:
                     db.close()