diff --git a/server/gameserver/buff.cc b/server/gameserver/buff.cc
index a78098f6..dffa43aa 100644
--- a/server/gameserver/buff.cc
+++ b/server/gameserver/buff.cc
@@ -1268,25 +1268,6 @@ void Buff::ProcCallFunc()
     switch (meta->int_param1) {
     case 1:
         {
-            MetaData::Equip* weapon_meta = MetaMgr::Instance()->GetEquip(meta->int_param2);
-            if (weapon_meta) {
-                for (int i = 0; meta->param4_int_list.size(); ++i) {
-                    a8::Vec2 bullet_dir = a8::Vec2::UP;
-                    bullet_dir.Rotate(meta->param4_int_list[i] / 180.f);
-                    a8::Vec2 bullet_born_pos = owner->GetPos() + bullet_dir * meta->param3;
-                    int bullet_uniid = owner->room->AllocUniid();
-                    owner->room->frame_event.AddBullet
-                        (bullet_uniid,
-                         owner->GetWeakPtrRef(),
-                         weapon_meta,
-                         1,
-                         bullet_born_pos,
-                         bullet_dir,
-                         0,
-                         0,
-                         0);
-                }
-            }
         }
         break;
     case 2:
@@ -1320,3 +1301,65 @@ void Buff::ProcRemoveCallFunc()
         break;
     }
 }
+
+void Buff::PreProcess()
+{
+    switch (meta->i->buff_target()) {
+    case kBET_CallFunc:
+        {
+            switch (meta->int_param1) {
+            case 1:
+                {
+                    event_handlers_.push_back
+                        (
+                         owner->GetTrigger()->AddListener
+                         (
+                          kTriggerBulletHitBuffEvent,
+                          [this] (const std::vector<std::any>& params)
+                          {
+                              Bullet* bullet = std::any_cast<Bullet*>(params.at(0));
+                              ProcSputteringFunc(bullet);
+                          }));
+                }
+                break;
+            default:
+                {
+                }
+                break;
+            }
+        }
+        break;
+    default:
+        {
+        }
+        break;
+    }
+}
+
+
+void Buff::ProcSputteringFunc(Bullet* bullet)
+{
+    MetaData::Equip* weapon_meta = MetaMgr::Instance()->GetEquip(meta->int_param2);
+    if (!weapon_meta) {
+        return;
+    }
+
+    for (int i = 0; meta->param4_int_list.size(); ++i) {
+        a8::Vec2 bullet_dir = a8::Vec2::UP;
+        bullet_dir.Rotate(meta->param4_int_list[i] / 180.f);
+        a8::Vec2 bullet_born_pos = owner->GetPos() + bullet_dir * meta->param3;
+        int bullet_uniid = owner->room->AllocUniid();
+        owner->room->frame_event.AddBullet
+            (bullet_uniid,
+             owner->GetWeakPtrRef(),
+             weapon_meta,
+             1,
+             bullet_born_pos,
+             bullet_dir,
+             0,
+             0,
+             0);
+        VirtualBullet* bullet = new VirtualBullet();
+        owner->room->AddTask(bullet_uniid, bullet);
+    }
+}
diff --git a/server/gameserver/buff.h b/server/gameserver/buff.h
index c4f6ca76..9b68a071 100644
--- a/server/gameserver/buff.h
+++ b/server/gameserver/buff.h
@@ -26,6 +26,7 @@ struct RemoveBuffCbConext
 
 class Human;
 class Creature;
+class Bullet;
 struct EventHandlerPtr;
 struct xtimer_list;
 class Buff
@@ -94,10 +95,13 @@ class Buff
 
     void CalcPassengerShotOffset();
 
+    void PreProcess();
 private:
+    void ClearEventHandlers();
     void InternalTimerAddBuff();
     void RecoverHoldWeapons();
-    void ClearEventHandlers();
+
+    void ProcSputteringFunc(Bullet* bullet);
 
 private:
     int hold_curr_weapon_idx_ = 0;
diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 5b0c7dc7..967e9fde 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -924,7 +924,6 @@ void Bullet::TriggerHitBuff(Entity* e)
     if (!e->IsDead(room) && e->IsCreature(room)) {
         Creature* c = (Creature*)e;
         for (int buff_id : gun_meta->hit_buff_list) {
-
             int buff_uniid = c->TryAddBuff(
                                            sender.Get(),
                                            buff_id,
@@ -934,6 +933,7 @@ void Bullet::TriggerHitBuff(Entity* e)
                 SkillHelper::ProcBulletHitBuff(this, c, buff_uniid);
             }
         }
+        c->GetTrigger()->BulletHitBuff(this);
     }
 }
 
diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index b6b98a07..dade27b0 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -186,6 +186,10 @@ int Creature::AddBuff(Creature* caster,
     buff->add_frameno = room->GetFrameNo();
     buff->xtimer_attacher.xtimer = &room->xtimer;
     buff->Init();
+    buff->PreProcess();
+    if (on_add_buff) {
+        on_add_buff(buff);
+    }
     if (buff->meta->i->lock_move()) {
         IncDisableMoveTimes();
     }
diff --git a/server/gameserver/creature.h b/server/gameserver/creature.h
index 4bb55e9a..951d6b38 100644
--- a/server/gameserver/creature.h
+++ b/server/gameserver/creature.h
@@ -87,6 +87,7 @@ class Creature : public MoveableEntity
     long long poisoning_time = 0;
     bool playing_skill = false;
     int power_idx = -1;
+    std::function<void(Buff*)> on_add_buff;
 
     Weapon second_weapon;
     a8::Vec2 context_pos;
diff --git a/server/gameserver/trigger.cc b/server/gameserver/trigger.cc
index 90573987..0928156e 100644
--- a/server/gameserver/trigger.cc
+++ b/server/gameserver/trigger.cc
@@ -470,3 +470,8 @@ void Trigger::FlyHookDestory()
 {
     DispatchEvent(kFlyHookDestoryEvent, {});
 }
+
+void Trigger::BulletHitBuff(Bullet* bullet)
+{
+    DispatchEvent(kTriggerBulletHitBuffEvent, {bullet});
+}
diff --git a/server/gameserver/trigger.h b/server/gameserver/trigger.h
index c747f731..8546387c 100644
--- a/server/gameserver/trigger.h
+++ b/server/gameserver/trigger.h
@@ -38,6 +38,7 @@ enum EventId_e
    kFlyHookDestoryEvent,
    kSkillBulletPreCreateEvent,
    kUseSkillEvent,
+   kTriggerBulletHitBuffEvent
 };
 
 class Weapon;
@@ -72,6 +73,7 @@ public:
     void SkillBulletPreCreate(int delay_time, MetaData::Skill* skill_meta);
     void FlyHookCreate(Bullet* bullet);
     void FlyHookDestory();
+    void BulletHitBuff(Bullet* bullet);
 
     std::weak_ptr<EventHandlerPtr> AddListener(int event_id, CommonCbProc cb);
     void RemoveEventHandler(std::weak_ptr<EventHandlerPtr> handler_ptr);