diff --git a/server/gameserver/building.cc b/server/gameserver/building.cc
index 797d02c..e03b9c4 100644
--- a/server/gameserver/building.cc
+++ b/server/gameserver/building.cc
@@ -43,6 +43,19 @@ void Building::RecalcSelfCollider()
         permanent_map_service->AddCollider(collider);
     }
 
+    for (auto& obj : meta->i->halfwallobj()) {
+        AabbCollider* collider = new AabbCollider();
+        collider->owner = this;
+        collider->_min = a8::Vec2(obj.x() - obj.width()/2.0 - meta->i->tilewidth()/2.0,
+                                  obj.y() - obj.height()/2.0 - meta->i->tileheight()/2.0);
+        collider->_max = a8::Vec2(obj.x() + obj.width()/2.0 - meta->i->tilewidth()/2.0,
+                                  obj.y() + obj.height()/2.0 - meta->i->tileheight()/2.0);
+        a8::SetBitFlag(collider->tag, kHalfWallTag);
+        AddEntityCollider(collider);
+        collider_list.push_back(collider);
+        permanent_map_service->AddCollider(collider);
+    }
+
     AutoAdjust(collider_list);
 }
 
diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index eba0b2f..196896c 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -216,7 +216,7 @@ void Bullet::MapServiceUpdate()
             std::set<ColliderComponent*> colliders;
             room->map_service->GetColliders(room, GetX(), GetY(), colliders);
             for (ColliderComponent* collider : colliders) {
-                if (TestCollision(room, collider)) {
+                if (TestCollision(room, collider) && !a8::HasBitFlag(collider->tag, kHalfWallTag)) {
                     objects.insert(collider->owner);
                 }
             }
diff --git a/server/gameserver/collider.h b/server/gameserver/collider.h
index ceb0e81..0184539 100644
--- a/server/gameserver/collider.h
+++ b/server/gameserver/collider.h
@@ -14,6 +14,7 @@ class ColliderComponent
     Entity* owner = nullptr;
     ColliderType_e type = CT_None;
     bool active = true;
+    int tag = 0;
 
     bool Intersect(ColliderComponent* b);
     bool IntersectEx(const a8::Vec2& pos, ColliderComponent* b);
diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index 46ae74b..82514e4 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -312,6 +312,11 @@ enum AIMode_e
     kZombieAiMode = 2
 };
 
+enum ColliderTag_e
+{
+    kHalfWallTag = 1
+};
+
 const char* const PROJ_NAME_FMT = "game%d_gameserver";
 const char* const PROJ_ROOT_FMT = "/data/logs/%s";
 
@@ -368,3 +373,4 @@ const int ZOMBIE_RACE_META_START_ID = 6001;
 const int TERMINATOR_BUFF_ID = 1033;
 
 const int TURN_OVER_SKILL_ID = 41001;
+
diff --git a/server/tools/protobuild/metatable.proto b/server/tools/protobuild/metatable.proto
index c479199..6cb6622 100755
--- a/server/tools/protobuild/metatable.proto
+++ b/server/tools/protobuild/metatable.proto
@@ -312,6 +312,7 @@ message BuildingJson
     repeated DropObjJson dropObj = 5;
     repeated StaticObjJson staticObj = 6;
     repeated LootObjJson lootObj = 7;
+    repeated StaticObjJson halfwallObj = 8;
 
     optional int32 mapId = 20;
 }