diff --git a/server/gameserver/entity.cc b/server/gameserver/entity.cc
index ce6f124..657daea 100644
--- a/server/gameserver/entity.cc
+++ b/server/gameserver/entity.cc
@@ -85,7 +85,6 @@ void Entity::ClearColliders()
 {
     for (auto& itr : colliders) {
         ColliderComponent* collider = itr;
-        OnRemoveCollider(collider);
         DestoryCollider(collider);
     }
     colliders.clear();
diff --git a/server/gameserver/entity.h b/server/gameserver/entity.h
index a246fa8..89b79a0 100644
--- a/server/gameserver/entity.h
+++ b/server/gameserver/entity.h
@@ -39,7 +39,6 @@ class Entity
     virtual bool IsDead(Room* room) { return false;};
     virtual long long GetDeadFrameNo(Room* room) { return 0;};
     virtual void OnPreCollision(Room* room) {};
-    virtual void OnRemoveCollider(ColliderComponent* collider) {};
     bool TestCollision(Room* room, Entity* b);
     bool TestCollision(Room* room, ColliderComponent* b);
     bool TestCollisionEx(Room* room, const a8::Vec2& aabb_pos, AabbCollider& aabb_box);
@@ -78,9 +77,11 @@ class Entity
         pos_.y = y;
     }
 
+protected:
+    std::list<ColliderComponent*> colliders;
+
 private:
     a8::Vec2 pos_;
-    std::list<ColliderComponent*> colliders;
 
     void ClearColliders();
 };
diff --git a/server/gameserver/roomobstacle.cc b/server/gameserver/roomobstacle.cc
index 146ce9a..a66144c 100644
--- a/server/gameserver/roomobstacle.cc
+++ b/server/gameserver/roomobstacle.cc
@@ -18,7 +18,18 @@ RoomObstacle::RoomObstacle():Obstacle()
 
 RoomObstacle::~RoomObstacle()
 {
-
+    for (auto& itr : colliders) {
+        ColliderComponent* collider = itr;
+#ifdef DEBUG
+        a8::UdpLog::Instance()->Debug("OnRemoveCollider %d %d %d",
+                                      {
+                                       room->room_idx,
+                                       entity_uniid,
+                                       (long long)collider
+                                      });
+#endif
+        room->map_service->RemoveCollider(collider);
+    }
 }
 
 void RoomObstacle::Initialize()
@@ -68,16 +79,3 @@ void RoomObstacle::RecalcSelfCollider()
     #endif
     }
 }
-
-void RoomObstacle::OnRemoveCollider(ColliderComponent* collider)
-{
-    #ifdef DEBUG
-    a8::UdpLog::Instance()->Debug("OnRemoveCollider %d %d %d",
-                                  {
-                                   room->room_idx,
-                                   entity_uniid,
-                                   (long long)collider
-                                  });
-    #endif
-    room->map_service->RemoveCollider(collider);
-}
diff --git a/server/gameserver/roomobstacle.h b/server/gameserver/roomobstacle.h
index 1ae7415..18d796c 100644
--- a/server/gameserver/roomobstacle.h
+++ b/server/gameserver/roomobstacle.h
@@ -13,6 +13,4 @@ class RoomObstacle : public Obstacle
     virtual ~RoomObstacle() override;
     virtual void Initialize() override;
     virtual void RecalcSelfCollider() override;
-    virtual void OnRemoveCollider(ColliderComponent* collider) override;
-
 };