diff --git a/mower/solvers/infra/enter_room.py b/mower/solvers/infra/enter_room.py
index 1439567..d47e502 100644
--- a/mower/solvers/infra/enter_room.py
+++ b/mower/solvers/infra/enter_room.py
@@ -98,10 +98,12 @@ class EnterRoomSolver(BaseSolver, BaseMixin):
         logger.info(f"{translate_room(room)}")
         self.room = room
         self.detail = detail
-        self.avoid_bug_start_time = datetime.now()
+        self.avoid_bug_start_time = None
         super().run()
 
     def bug_timeout(self) -> bool:
+        if self.avoid_bug_start_time is None:
+            self.avoid_bug_start_time = datetime.now()
         return datetime.now() > self.avoid_bug_start_time + timedelta(seconds=60)
 
     @staticmethod
@@ -127,7 +129,7 @@ class EnterRoomSolver(BaseSolver, BaseMixin):
                 return
             if self.bug_timeout():  # yj的bug
                 self.back()
-                self.avoid_bug_start_time = datetime.now()
+                self.avoid_bug_start_time = None
                 return
             score, scope = config.recog.match2d("control_central")
             if score >= 0.7: