diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index f9d0fca..eabce40 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -2400,6 +2400,7 @@ bool Creature::CheckCollision()
 {
     Global::last_collider = nullptr;
     if (room->OverBorder(GetPos(), GetRadius())){
+        ++collision_times_;
         return true;
     }
     if (HasBuffEffect(kBET_ThroughWall) ||
@@ -2424,6 +2425,7 @@ bool Creature::CheckCollision()
                             (collider->type == CT_Circle && self_collider_->Intersect(collider))
                             ) {
                             if (obstacle->OnCollisionTrigger(this, collider) == 1) {
+                                ++collision_times_;
                                 return true;
                             }
                         }
@@ -2437,6 +2439,7 @@ bool Creature::CheckCollision()
                         (collider->type == CT_Circle && self_collider_->Intersect(collider))
                         ) {
                         Global::last_collider = collider;
+                        ++collision_times_;
                         return true;
                     }
                 }
@@ -2448,6 +2451,7 @@ bool Creature::CheckCollision()
                         (collider->type == CT_Circle && self_collider_->Intersect(collider))
                         ) {
                         Global::last_collider = collider;
+                        ++collision_times_;
                         return true;
                     }
                 }
diff --git a/server/gameserver/creature.h b/server/gameserver/creature.h
index c6b1231..38b765b 100644
--- a/server/gameserver/creature.h
+++ b/server/gameserver/creature.h
@@ -210,6 +210,7 @@ class Creature : public MoveableEntity
     std::shared_ptr<Ability>& GetAbility() { return ability_; };
     void RefreshHP();
     void TraverseBuff(std::function<void (Buff*, bool&)> func);
+    long long GetCollisionTimes() { return collision_times_; };
 
 protected:
 
@@ -252,6 +253,7 @@ protected:
 private:
     CreatureWeakPtr weak_ptr_;
     Trigger* trigger_ = nullptr;
+    long long collision_times_ = 0;
     Team* team_ = nullptr;
     Weapon* curr_weapon_ = nullptr;
     CreatureWeakPtrChunk weak_ptr_chunk_;
diff --git a/server/gameserver/hero.ai.cc b/server/gameserver/hero.ai.cc
index 1d742a3..f1f454e 100644
--- a/server/gameserver/hero.ai.cc
+++ b/server/gameserver/hero.ai.cc
@@ -7,6 +7,7 @@
 #include "room.h"
 #include "metamgr.h"
 #include "player.h"
+#include "roomobstacle.h"
 
 HeroAI::HeroAI()
 {
@@ -74,6 +75,11 @@ void HeroAI::UpdateAI()
             UpdateFollowMaster();
         }
         break;
+    case HSE_SweepMine:
+        {
+            UpdateSweepMine();
+        }
+        break;
     default:
         {
             abort();
@@ -112,6 +118,14 @@ void HeroAI::UpdateThinking()
             ChangeToStateAI(HSE_FollowMaster);
             return;
         }
+        if (ai_meta->i->ai_kind() == kAI_MineSweeper) {
+            RoomObstacle* target = FindObstacleTarget();
+            if (target) {
+                node_->target_obstacle.Attach(target);
+                ChangeToStateAI(HSE_SweepMine);
+                return;
+            }
+        }
         Creature* target = GetTarget();
         if (target) {
             node_->target.Attach(target);
@@ -337,10 +351,24 @@ void HeroAI::ChangeToStateAI(HeroState_e to_state)
             }
         }
         break;
+    case HSE_SweepMine:
+        {
+            moving_ = true;
+            a8::Vec2 move_dir = node_->target_obstacle.Get()->GetPos() - hero->GetPos();
+            move_dir.Normalize();
+            hero->SetMoveDir(move_dir);
+            hero->SetAttackDir(hero->GetMoveDir());
+        }
+        break;
+    default:
+        {
+        }
+        break;
     }
     node_->main_state = to_state;
     node_->frameno = hero->room->GetFrameNo();
     node_->exec_frame_num = 0;
+    node_->last_collision_times = hero->GetCollisionTimes();
 }
 
 Creature* HeroAI::GetTarget()
@@ -438,3 +466,46 @@ int HeroAI::GetAttackTimes()
         return ai_meta->i->attack_times();
     }
 }
+
+void HeroAI::UpdateSweepMine()
+{
+    Hero* myself = (Hero*)owner;
+    if (!node_->target_obstacle.Get() || node_->target_obstacle.Get()->IsDead(myself->room)) {
+        ChangeToStateAI(HSE_Thinking);
+        return;
+    }
+    if (node_->exec_frame_num > SERVER_FRAME_RATE * 8) {
+        ChangeToStateAI(HSE_Thinking);
+        return;
+    }
+    if (myself->HasBuffEffect(kBET_Vertigo)) {
+        return;
+    }
+    if (node_->exec_frame_num % SERVER_FRAME_RATE == 0) {
+        a8::Vec2 move_dir = node_->target_obstacle.Get()->GetPos() - myself->GetPos();
+        move_dir.Normalize();
+        myself->SetMoveDir(move_dir);
+        myself->SetAttackDir(myself->GetMoveDir());
+    }
+    float distance = myself->GetPos().Distance(node_->target_obstacle.Get()->GetPos());
+    if (distance < myself->GetSpeed() + 2) {
+        myself->_UpdateMove(distance);
+        distance = myself->GetPos().Distance(node_->target_obstacle.Get()->GetPos());
+    }
+    if (!node_->target_obstacle.Get() || node_->target_obstacle.Get()->IsDead(myself->room)) {
+        ChangeToStateAI(HSE_Thinking);
+    } else {
+        if (myself->GetCollisionTimes() > node_->last_collision_times) {
+            ChangeToStateAI(HSE_Thinking);
+        } else {
+            if (distance < 3) {
+                ChangeToStateAI(HSE_Idle);
+            }
+        }
+    }
+}
+
+RoomObstacle* HeroAI::FindObstacleTarget()
+{
+    return nullptr;
+}
diff --git a/server/gameserver/hero.ai.h b/server/gameserver/hero.ai.h
index 9ea7954..ff0e818 100644
--- a/server/gameserver/hero.ai.h
+++ b/server/gameserver/hero.ai.h
@@ -7,12 +7,13 @@
 
 enum HeroState_e : int
 {
-   HSE_Idle = 0,
-   HSE_Thinking = 1,
-   HSE_Attack = 2,
-   HSE_RandomWalk = 3,
-   HSE_Pursuit = 4,
-   HSE_FollowMaster = 5
+   HSE_Idle,
+   HSE_Thinking,
+   HSE_Attack,
+   HSE_RandomWalk,
+   HSE_Pursuit,
+   HSE_FollowMaster,
+   HSE_SweepMine
 };
 
 class HeroAINode
@@ -33,6 +34,8 @@ public:
     long long last_check_nearest_human_frameno = 0;
     a8::Vec2 shot_dir;
     a8::Vec2 target_pos;
+    RoomObstacleWeakPtr target_obstacle;
+    long long last_collision_times = 0;
 };
 
 class HeroAI : public AIComponent
@@ -52,11 +55,13 @@ protected:
     void UpdateRandomWalk();
     void UpdatePursuit();
     void UpdateFollowMaster();
+    void UpdateSweepMine();
     void DoMoveAI();
     void ChangeToStateAI(HeroState_e to_state);
     void DoShotAI();
 
     Creature* GetTarget();
+    RoomObstacle* FindObstacleTarget();
     float GetAttackRange();
     int GetAttackTimes();