diff --git a/server/gameserver/base_agent.cc b/server/gameserver/base_agent.cc
index bde9fb01..8b876130 100644
--- a/server/gameserver/base_agent.cc
+++ b/server/gameserver/base_agent.cc
@@ -36,3 +36,18 @@ behaviac::EBTStatus BaseAgent::DoRunningCb()
     }
     return status_;
 }
+
+
+behaviac::EBTStatus BaseAgent::CoAttackTarget(int target_id)
+{
+    if (status_ == behaviac::BT_RUNNING) {
+        return DoRunningCb();
+    }
+    status_runing_cb_ =
+        [this] () mutable
+        {
+            return status_;
+        };
+    status_ = behaviac::BT_RUNNING;
+    return status_;
+}
diff --git a/server/gameserver/base_agent.h b/server/gameserver/base_agent.h
index aec10f50..29c696ef 100644
--- a/server/gameserver/base_agent.h
+++ b/server/gameserver/base_agent.h
@@ -16,6 +16,8 @@ public:
     bool IsGameOver();
     bool HasTarget(float range);
 
+    behaviac::EBTStatus CoAttackTarget(int target_id);
+
 public:
     void SetOwner(Creature* owner) { owner_ = owner; };
     Creature* GetOwner() { return owner_; };