diff --git a/biz/checkpoint/checkpoint_biz.py b/biz/checkpoint/checkpoint_biz.py
index 0dc3892..ad75cf3 100644
--- a/biz/checkpoint/checkpoint_biz.py
+++ b/biz/checkpoint/checkpoint_biz.py
@@ -142,11 +142,11 @@ class KadianDetector:
         self.nobody_frames = 0  # 累计无人在场帧数
         self.only_one_frames = 0  # 累计单人在场帧数
 
-        self.max_car_frames = int((3.0 + self.TIME_TOLERANCE_CAR) * self.fps)  # 50帧
+        self.max_car_frames = int((8.0 + self.TIME_TOLERANCE_CAR) * self.fps)  # 50帧
         self.frame_buffer_ignore_untrunk = deque(maxlen=self.max_car_frames)
 
-        self.untrunk_rollback_time = 3.0    # 未检查后备箱需要回溯的时间
-        self.ignored_rollback_time = 1.0    # 漏检需要回溯的时间
+        self.untrunk_rollback_time = 5.0    # 未检查后备箱需要回溯的时间
+        self.ignored_rollback_time = 3.0    # 漏检需要回溯的时间
 
 
     def _get_roi_points(self, frame_width: int, frame_height: int):