diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index 5585b73..21fc2fc 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -1937,6 +1937,7 @@ void Creature::SummonObstacle(Buff* buff, int id, const a8::Vec2& pos)
     }
     RoomObstacle* obstacle = room->CreateObstacle(id, pos.x, pos.y);
     if (obstacle) {
+        obstacle->buff_meta = buff->meta;
         obstacle->master.Attach(this);
         obstacle->SetTeamId(room, team_id);
         obstacle->SetMasterId(room, GetUniId());
@@ -1947,7 +1948,9 @@ void Creature::SummonObstacle(Buff* buff, int id, const a8::Vec2& pos)
         SendDebugMsg(a8::Format("召唤物件 buff_id:%d thing_id:%d", {buff->meta->i->buff_id(), id}));
 #endif
     } else {
+#ifdef DEBUG
         abort();
+#endif
     }
 }
 
diff --git a/server/gameserver/roomobstacle.cc b/server/gameserver/roomobstacle.cc
index 28e3b4d..1f5f2ad 100644
--- a/server/gameserver/roomobstacle.cc
+++ b/server/gameserver/roomobstacle.cc
@@ -299,6 +299,20 @@ void RoomObstacle::Active()
         }
         break;
     }
+    if (meta->i->life_time() > 0) {
+        room->xtimer.AddDeadLineTimerAndAttach
+            (
+             meta->i->life_time() / FRAME_RATE_MS,
+             a8::XParams()
+             .SetSender(this),
+             [] (const a8::XParams& param)
+             {
+                 RoomObstacle* obstacle = (RoomObstacle*)param.sender.GetUserData();
+                 obstacle->DetachFromMaster();
+             },
+             &xtimer_attacher.timer_list_
+             );
+    }
 }
 
 void RoomObstacle::ActiveSelfExplosion()
diff --git a/server/gameserver/roomobstacle.h b/server/gameserver/roomobstacle.h
index 8442ee4..ad658c8 100644
--- a/server/gameserver/roomobstacle.h
+++ b/server/gameserver/roomobstacle.h
@@ -5,6 +5,11 @@
 #include "obstacle.h"
 #include "weakptr.h"
 
+namespace MetaData
+{
+    struct Buff;
+}
+
 class Ability;
 class RoomObstacle : public Obstacle
 {
@@ -16,6 +21,7 @@ class RoomObstacle : public Obstacle
     int real_object_uniid = 0;
     std::shared_ptr<Ability> context_ability;
     bool sweep_lock = false;
+    MetaData::Buff* buff_meta = nullptr;
 
     virtual ~RoomObstacle() override;
     virtual void Initialize() override;
diff --git a/server/tools/protobuild/metatable.proto b/server/tools/protobuild/metatable.proto
index 0ec5359..db3557d 100755
--- a/server/tools/protobuild/metatable.proto
+++ b/server/tools/protobuild/metatable.proto
@@ -73,6 +73,7 @@ message MapThing
     optional int32 explosion_hit = 30;
     optional string sweep_tags = 31;
     optional int32 prebattle_hide = 32;
+    optional int32 life_time = 33;
 }
 
 message SafeArea