diff --git a/elevator_saga/core/models.py b/elevator_saga/core/models.py
index 176e9be..c92615c 100644
--- a/elevator_saga/core/models.py
+++ b/elevator_saga/core/models.py
@@ -162,12 +162,13 @@ class PassengerInfo(SerializableModel):
     arrive_tick: int
     pickup_tick: int = 0
     dropoff_tick: int = 0
+    arrived: bool = False
     elevator_id: Optional[int] = None
 
     @property
     def status(self) -> PassengerStatus:
         """乘客状态"""
-        if self.dropoff_tick > 0:
+        if self.arrived:
             return PassengerStatus.COMPLETED
         elif self.pickup_tick > 0:
             return PassengerStatus.IN_ELEVATOR
diff --git a/elevator_saga/server/simulator.py b/elevator_saga/server/simulator.py
index b22623c..e6567d3 100644
--- a/elevator_saga/server/simulator.py
+++ b/elevator_saga/server/simulator.py
@@ -457,6 +457,7 @@ class ElevatorSimulation:
                 passenger = self.passengers[passenger_id]
                 if passenger.destination == current_floor:
                     passenger.dropoff_tick = self.tick
+                    passenger.arrived = True
                     passengers_to_remove.append(passenger_id)
 
             # Remove passengers who alighted