diff --git a/server/gameserver/android_agent.cc b/server/gameserver/android_agent.cc
index da01125f..5f93b6fc 100644
--- a/server/gameserver/android_agent.cc
+++ b/server/gameserver/android_agent.cc
@@ -116,7 +116,7 @@ behaviac::EBTStatus AndroidAgent::DoAttack()
     if (status_ == behaviac::BT_RUNNING) {
         return DoRunningCb();
     }
-    Human* enemy = GetOwner()->room->FindEnemy(GetOwner()->AsHuman());
+    Human* enemy = GetOwner()->room->FindEnemy(GetOwner()->AsHuman(), 300);
     if (!enemy) {
         return behaviac::BT_FAILURE;
     }
@@ -154,7 +154,7 @@ behaviac::EBTStatus AndroidAgent::DoPursuit()
     if (status_ == behaviac::BT_RUNNING) {
         return DoRunningCb();
     }
-    Human* enemy = GetOwner()->room->FindEnemy(GetOwner()->AsHuman());
+    Human* enemy = GetOwner()->room->FindEnemy(GetOwner()->AsHuman(), 500);
     if (!enemy) {
         return behaviac::BT_FAILURE;
     }
diff --git a/server/gameserver/base_agent.cc b/server/gameserver/base_agent.cc
index 4887210f..bde9fb01 100644
--- a/server/gameserver/base_agent.cc
+++ b/server/gameserver/base_agent.cc
@@ -21,12 +21,8 @@ bool BaseAgent::IsGameOver()
 
 bool BaseAgent::HasTarget(float range)
 {
-    Human* enemy = GetOwner()->room->FindEnemy(GetOwner()->AsHuman());
-    if (enemy) {
-        float distance = enemy->GetPos().Distance(GetOwner()->GetPos());
-        return distance <= range;
-    }
-    return false;
+    Human* enemy = GetOwner()->room->FindEnemy(GetOwner()->AsHuman(), range);
+    return enemy != nullptr;
 }
 
 behaviac::EBTStatus BaseAgent::DoRunningCb()
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 2b05254e..794127b3 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -413,7 +413,7 @@ void Room::CreateAndroid(int robot_num)
     NotifyUiUpdate();
 }
 
-Human* Room::FindEnemy(Human* hum)
+Human* Room::FindEnemy(Human* hum, float range)
 {
     std::vector<Human*> enemys;
     enemys.reserve(50);
diff --git a/server/gameserver/room.h b/server/gameserver/room.h
index 7dd7128b..eaa69d4c 100644
--- a/server/gameserver/room.h
+++ b/server/gameserver/room.h
@@ -138,7 +138,7 @@ public:
 
     Player* NewPlayer();
     void AddPlayer(Player* hum, BornPoint* init_born_point = nullptr, bool no_matchteam = false);
-    Human* FindEnemy(Human* hum);
+    Human* FindEnemy(Human* hum, float range);
 
     void AddTeam(class MatchTeam* team);