diff --git a/server/gameserver/car.cc b/server/gameserver/car.cc
index 6f47fea..655ea10 100644
--- a/server/gameserver/car.cc
+++ b/server/gameserver/car.cc
@@ -103,7 +103,7 @@ void Car::GetDown(Human* passenger)
     passenger->CancelAction();
     passenger->RemoveBuffByEffectId(kBET_Driver);
     passenger->RemoveBuffByEffectId(kBET_Passenger);
-    room->frame_event.AddCarChg(passenger);
+    room->frame_event.AddCarChg(passenger->GetWeakPtrRef());
     if (passengers_.empty()) {
         team_id = 0;
         room->TakeOffCarObject(GetUniId(), GetPos());
@@ -167,7 +167,7 @@ void Car::GetOn(Human* passenger)
         passenger->TryAddBuff(passenger, meta->i->buffid());
     }
     passenger->CancelAction();
-    room->frame_event.AddCarChg(passenger);
+    room->frame_event.AddCarChg(passenger->GetWeakPtrRef());
     if (passengers_.size() == 1) {
         RemoveBuffByEffectId(kBET_CarDeactive);
         TryAddBuff(this, meta->car_active_buff_id);
@@ -198,7 +198,7 @@ void Car::SwitchSeat(Human* passenger, int seat)
         passenger->SetSeat(seat);
         driver_ = passenger;
         passenger->MustBeAddBuff(passenger, DRIVER_BUFFID);
-        room->frame_event.AddCarChg(passenger);
+        room->frame_event.AddCarChg(passenger->GetWeakPtrRef());
         SyncAroundPlayers(__FILE__, __LINE__, __func__);
     }
 }
@@ -328,7 +328,7 @@ void Car::BeKill(int killer_id, const std::string& killer_name, int weapon_id)
         passenger->CancelAction();
         passenger->RemoveBuffByEffectId(kBET_Driver);
         passenger->RemoveBuffByEffectId(kBET_Passenger);
-        room->frame_event.AddCarChg(passenger);
+        room->frame_event.AddCarChg(passenger->GetWeakPtrRef());
     }
     Explosion(team_id);
 }
diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index a468b4c..92fd0b5 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -43,7 +43,7 @@ void InternalShot(Creature* c,
         }
     }
     if (skill_id == 0) {
-        c->room->frame_event.AddShot(c);
+        c->room->frame_event.AddShot(c->GetWeakPtrRef());
     }
     for (auto& tuple : weapon_meta->bullet_born_offset) {
         a8::Vec2 bullet_born_offset = a8::Vec2(std::get<0>(tuple), std::get<1>(tuple));
@@ -58,7 +58,7 @@ void InternalShot(Creature* c,
             }
         }
         bullet_dir.Rotate(bullet_angle / 180.0f);
-        c->room->frame_event.AddBullet(c,
+        c->room->frame_event.AddBullet(c->GetWeakPtrRef(),
                                        weapon_meta,
                                        weapon_lv,
                                        bullet_born_pos,
@@ -1342,8 +1342,8 @@ void Creature::Shot(a8::Vec2& target_dir, bool& shot_ok, float fly_distance)
     }
     last_shot_frameno_ = room->GetFrameNo();
     if (!need_sync_active_player && IsPlayer()) {
-        room->frame_event.AddBulletNumChg((Human*)this);
-        room->frame_event.AddWeaponAmmoChg((Human*)this);
+        room->frame_event.AddBulletNumChg(GetWeakPtrRef());
+        room->frame_event.AddWeaponAmmoChg(GetWeakPtrRef());
     }
     shot_ok = true;
 }
diff --git a/server/gameserver/creature.h b/server/gameserver/creature.h
index 1d656ea..fabe67e 100644
--- a/server/gameserver/creature.h
+++ b/server/gameserver/creature.h
@@ -124,6 +124,7 @@ class Creature : public MoveableEntity
     bool IsAndroid() const;
     bool IsHuman() const;
     bool IsCar() const;
+    Human* AsHuman() { return IsHuman() ? (Human*)this : nullptr; };
     virtual void DecHP(float dec_hp, int killer_id, const std::string& killer_name, int weapon_id) {};
     void AddHp(float hp);
 
diff --git a/server/gameserver/frameevent.cc b/server/gameserver/frameevent.cc
index 05c0643..45255c7 100644
--- a/server/gameserver/frameevent.cc
+++ b/server/gameserver/frameevent.cc
@@ -18,7 +18,7 @@ void FrameEvent::AddAirDrop(int appear_time, int box_id, a8::Vec2 box_pos)
     TypeConvert::ToPb(box_pos, airdrop->mutable_pos());
 }
 
-void FrameEvent::AddEmote(Human* sender, int emote_id)
+void FrameEvent::AddEmote(CreatureWeakPtr& sender, int emote_id)
 {
     {
         auto& tuple = a8::FastAppend(emotes_);
@@ -26,11 +26,11 @@ void FrameEvent::AddEmote(Human* sender, int emote_id)
         auto& p = std::get<1>(tuple);
 
         p.set_emote_id(emote_id);
-        p.set_player_id(sender->GetUniId());
+        p.set_player_id(sender.Get()->GetUniId());
     }
     {
         int emote_idx = emotes_.size() - 1;
-        sender->TraverseAllLayerHumanList
+        sender.Get()->TraverseAllLayerHumanList
             (
              [emote_idx] (Human* hum, bool& stop)
              {
@@ -39,26 +39,26 @@ void FrameEvent::AddEmote(Human* sender, int emote_id)
     }
 }
 
-void FrameEvent::AddShot(Creature* sender)
+void FrameEvent::AddShot(CreatureWeakPtr& sender)
 {
     {
         auto& tuple = a8::FastAppend(shots_);
         std::get<0>(tuple) = sender;
         auto& p = std::get<1>(tuple);
 
-        p.set_player_id(sender->GetUniId());
-        if (sender->second_weapon.meta) {
-            sender->second_weapon.ToPB(p.mutable_weapon());
+        p.set_player_id(sender.Get()->GetUniId());
+        if (sender.Get()->second_weapon.meta) {
+            sender.Get()->second_weapon.ToPB(p.mutable_weapon());
         } else {
-            sender->GetCurrWeapon()->ToPB(p.mutable_weapon());
+            sender.Get()->GetCurrWeapon()->ToPB(p.mutable_weapon());
         }
-        if (sender->IsCar()) {
-            p.set_hole(sender->shot_hole);
+        if (sender.Get()->IsCar()) {
+            p.set_hole(sender.Get()->shot_hole);
         }
     }
     {
         int shot_idx = shots_.size() - 1;
-        sender->TraverseAllLayerHumanList
+        sender.Get()->TraverseAllLayerHumanList
             (
              [shot_idx] (Human* hum, bool& stop)
              {
@@ -67,7 +67,7 @@ void FrameEvent::AddShot(Creature* sender)
     }
 }
 
-void FrameEvent::AddBullet(Creature* sender,
+void FrameEvent::AddBullet(CreatureWeakPtr& sender,
                            MetaData::Equip* weapon_meta,
                            int weapon_lv,
                            a8::Vec2 born_pos,
@@ -79,7 +79,7 @@ void FrameEvent::AddBullet(Creature* sender,
         std::get<0>(tuple) = sender;
         auto& p = std::get<1>(tuple);
 
-        p.set_player_id(sender->GetUniId());
+        p.set_player_id(sender.Get()->GetUniId());
         p.set_bullet_id(weapon_meta->i->use_bullet());
         TypeConvert::ToPb(born_pos, p.mutable_pos());
         TypeConvert::ToPb(dir, p.mutable_dir());
@@ -92,7 +92,7 @@ void FrameEvent::AddBullet(Creature* sender,
     }
     {
         int bullet_idx = bullets_.size() - 1;
-        sender->TraverseAllLayerHumanList
+        sender.Get()->TraverseAllLayerHumanList
             (
              [bullet_idx] (Human* hum, bool& stop)
              {
@@ -132,11 +132,13 @@ void FrameEvent::AddExplosionEx(CreatureWeakPtr& sender, int item_id, a8::Vec2 b
     }
 }
 
-void FrameEvent::AddBulletNumChg(Human* hum)
+void FrameEvent::AddBulletNumChg(CreatureWeakPtr& sender)
 {
-    chged_bullet_nums_.push_back(hum);
-    int idx = chged_bullet_nums_.size() - 1;
-    hum->chged_bullet_nums_.push_back(idx);
+    if (sender.Get()->IsHuman()) {
+        chged_bullet_nums_.push_back(sender);
+        int idx = chged_bullet_nums_.size() - 1;
+        ((Human*)sender.Get())->chged_bullet_nums_.push_back(idx);
+    }
 }
 
 void FrameEvent::AddSmoke(Bullet* bullet, int item_id, a8::Vec2 pos)
@@ -199,18 +201,18 @@ void FrameEvent::AddHpChg(CreatureWeakPtr& sender)
          });
 }
 
-void FrameEvent::AddWeaponAmmoChg(Human* hum)
+void FrameEvent::AddWeaponAmmoChg(CreatureWeakPtr& sender)
 {
-    if (hum->GetCurrWeapon()) {
+    if (sender.Get()->GetCurrWeapon() && sender.Get()->IsHuman()) {
         chged_weapon_ammo_.push_back
             (
-             std::make_tuple(hum,
-                             hum->GetCurrWeapon()->weapon_idx,
-                             hum->GetCurrWeapon()->ammo
+             std::make_tuple(sender,
+                             sender.Get()->GetCurrWeapon()->weapon_idx,
+                             sender.Get()->GetCurrWeapon()->ammo
                              )
              );
         int idx = chged_weapon_ammo_.size() - 1;
-        hum->chged_weapon_ammo_.push_back(idx);
+        sender.Get()->AsHuman()->chged_weapon_ammo_.push_back(idx);
     }
 }
 
@@ -272,19 +274,21 @@ void FrameEvent::AddSkillCurrTimesChg(CreatureWeakPtr sender, int skill_id, int
     }
 }
 
-void FrameEvent::AddItemChg(Human* hum, int item_id, int item_num)
+void FrameEvent::AddItemChg(CreatureWeakPtr& sender, int item_id, int item_num)
 {
-    chged_items_.push_back(std::make_tuple(hum, item_id, item_num));
-    int idx = chged_items_.size() - 1;
-    hum->chged_items_.push_back(idx);
+    if (sender.Get()->IsHuman()) {
+        chged_items_.push_back(std::make_tuple(sender, item_id, item_num));
+        int idx = chged_items_.size() - 1;
+        ((Human*)sender.Get())->chged_items_.push_back(idx);
+    }
 }
 
-void FrameEvent::AddZombieIdChg(Human* sender)
+void FrameEvent::AddZombieIdChg(CreatureWeakPtr& sender)
 {
     chged_zombieids_.push_back(sender);
     int idx = chged_zombieids_.size() - 1;
     {
-        sender->TraverseAllLayerHumanList
+        sender.Get()->TraverseAllLayerHumanList
             (
              [idx] (Human* hum, bool& stop)
              {
@@ -342,11 +346,11 @@ void FrameEvent::AddRevive(CreatureWeakPtr& sender)
     }
 }
 
-void FrameEvent::AddCarChg(Human* sender)
+void FrameEvent::AddCarChg(CreatureWeakPtr& sender)
 {
     chged_cars_.push_back(sender);
     int idx = chged_cars_.size() - 1;
-    sender->TraverseAllLayerHumanList
+    sender.Get()->TraverseAllLayerHumanList
         (
          [idx] (Human* hum, bool& stop)
          {
diff --git a/server/gameserver/frameevent.h b/server/gameserver/frameevent.h
index 31d5c64..e48d7c7 100644
--- a/server/gameserver/frameevent.h
+++ b/server/gameserver/frameevent.h
@@ -12,9 +12,9 @@ struct FrameEvent
 {
 public:
     void AddAirDrop(int appear_time, int box_id, a8::Vec2 box_pos);
-    void AddEmote(Human* hum, int emote_id);
-    void AddShot(Creature* sender);
-    void AddBullet(Creature* sender,
+    void AddEmote(CreatureWeakPtr& sender, int emote_id);
+    void AddShot(CreatureWeakPtr& sender);
+    void AddBullet(CreatureWeakPtr& sender,
                    MetaData::Equip* weapon_meta,
                    int weapon_lv,
                    a8::Vec2 born_pos,
@@ -24,37 +24,37 @@ public:
     void AddSmoke(Bullet* bullet, int item_id, a8::Vec2 pos);
     void AddPlaySkill(CreatureWeakPtr& sender, int skill_id);
     void AddExplosionEx(CreatureWeakPtr& sender, int item_id, a8::Vec2 bomb_pos, int effect);
-    void AddBulletNumChg(Human* hum);
+    void AddBulletNumChg(CreatureWeakPtr& sender);
     void AddHpChg(CreatureWeakPtr& sender);
-    void AddWeaponAmmoChg(Human* hum);
+    void AddWeaponAmmoChg(CreatureWeakPtr& sender);
     void AddBuff(CreatureWeakPtr& sender, Buff* buff);
     void RemoveBuff(CreatureWeakPtr& sender, int buff_id);
     void AddSkillCdChg(CreatureWeakPtr sender, int skill_id, int left_time);
     void AddSkillCurrTimesChg(CreatureWeakPtr sender, int skill_id, int curr_times);
-    void AddItemChg(Human* hum, int item_id, int item_num);
-    void AddZombieIdChg(Human* hum);
+    void AddItemChg(CreatureWeakPtr& sender, int item_id, int item_num);
+    void AddZombieIdChg(CreatureWeakPtr& sender);
     void AddDead(CreatureWeakPtr& sender, int revive_time);
     void AddRevive(CreatureWeakPtr& sender);
-    void AddCarChg(Human* sender);
+    void AddCarChg(CreatureWeakPtr& sender);
 
     void Clear();
 private:
     ::google::protobuf::RepeatedPtrField<::cs::MFAirDrop> airdrops_;
-    std::vector<std::tuple<Creature*, ::cs::MFShot>> shots_;
-    std::vector<std::tuple<Creature*, ::cs::MFBullet>> bullets_;
+    std::vector<std::tuple<CreatureWeakPtr, ::cs::MFShot>> shots_;
+    std::vector<std::tuple<CreatureWeakPtr, ::cs::MFBullet>> bullets_;
     std::vector<std::tuple<CreatureWeakPtr, ::cs::MFExplosion>> explosions_;
     std::vector<std::tuple<CreatureWeakPtr, ::cs::MFSmoke>> smokes_;
     std::vector<std::tuple<CreatureWeakPtr, ::cs::MFPlaySkill>> play_skills_;
-    std::vector<std::tuple<Creature*, ::cs::MFEmote>> emotes_;
+    std::vector<std::tuple<CreatureWeakPtr, ::cs::MFEmote>> emotes_;
     std::vector<std::tuple<CreatureWeakPtr, ::cs::MFBuffChg>> chged_buffs_;
-    std::vector<std::tuple<Human*, int, int>> chged_items_;
-    std::vector<Human*> chged_bullet_nums_;
-    std::vector<std::tuple<Human*, int, int>> chged_weapon_ammo_;
+    std::vector<std::tuple<CreatureWeakPtr, int, int>> chged_items_;
+    std::vector<CreatureWeakPtr> chged_bullet_nums_;
+    std::vector<std::tuple<CreatureWeakPtr, int, int>> chged_weapon_ammo_;
     std::vector<CreatureWeakPtr> chged_hps_;
     std::vector<std::tuple<CreatureWeakPtr, int, int>> chged_skillcds_;
     std::vector<std::tuple<CreatureWeakPtr, int, int>> chged_skill_curr_times_;
-    std::vector<Human*> chged_zombieids_;
-    std::vector<Human*> chged_cars_;
+    std::vector<CreatureWeakPtr> chged_zombieids_;
+    std::vector<CreatureWeakPtr> chged_cars_;
     std::vector<std::tuple<int, int, int>> dead_alive_objs_;
 
     friend class FrameMaker;
diff --git a/server/gameserver/framemaker.cc b/server/gameserver/framemaker.cc
index 9a9afe3..3cb5399 100644
--- a/server/gameserver/framemaker.cc
+++ b/server/gameserver/framemaker.cc
@@ -92,7 +92,7 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
         for (size_t idx : hum->shots_) {
             if (idx < room->frame_event.shots_.size()) {
                 auto& tuple = room->frame_event.shots_[idx];
-                if (hum->CanSee(std::get<0>(tuple))) {
+                if (std::get<0>(tuple).Get() && hum->CanSee(std::get<0>(tuple).Get())) {
                     *msg->add_shots() = std::get<1>(tuple);
                 } else {
 #ifdef DEBUG1
@@ -108,7 +108,7 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
         for (size_t idx : hum->bullets_) {
             if (idx < room->frame_event.bullets_.size()) {
                 auto& tuple = room->frame_event.bullets_[idx];
-                if (hum->CanSee(std::get<0>(tuple))) {
+                if (std::get<0>(tuple).Get() && hum->CanSee(std::get<0>(tuple).Get())) {
                     *msg->add_bullets() = std::get<1>(tuple);
                 }
             }
@@ -144,19 +144,19 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
         for (size_t idx : hum->emotes_) {
             if (idx < room->frame_event.emotes_.size()) {
                 auto& tuple = room->frame_event.emotes_[idx];
-                if (hum->CanSee(std::get<0>(tuple))) {
+                if (std::get<0>(tuple).Get() && hum->CanSee(std::get<0>(tuple).Get())) {
                     *msg->add_emotes() = std::get<1>(tuple);
                 }
             }
         }
         for (size_t idx : hum->chged_bullet_nums_) {
             if (idx < room->frame_event.chged_bullet_nums_.size()) {
-                Human* target = room->frame_event.chged_bullet_nums_[idx];
-                if (target->GetCurrWeapon()) {
+                CreatureWeakPtr& target = room->frame_event.chged_bullet_nums_[idx];
+                if (target.Get()->GetCurrWeapon()) {
                     auto p = msg->add_chged_property_list();
-                    p->set_obj_id(target->GetUniId());
+                    p->set_obj_id(target.Get()->GetUniId());
                     p->set_property_type(kPropBulletNum);
-                    p->set_value(target->GetCurrWeapon()->ammo);
+                    p->set_value(target.Get()->GetCurrWeapon()->ammo);
                 }
             }
         }
@@ -253,7 +253,7 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
                 auto& tuple = room->frame_event.chged_items_[idx];
                 {
                     auto p = msg->add_chged_property_list();
-                    p->set_obj_id((std::get<0>(tuple))->GetUniId());
+                    p->set_obj_id((std::get<0>(tuple)).Get()->GetUniId());
                     p->set_property_type(kPropItem);
                     p->set_property_subtype(std::get<1>(tuple));
                     p->set_value(std::get<2>(tuple));
@@ -265,7 +265,7 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
                 auto& tuple = room->frame_event.chged_weapon_ammo_[idx];
                 {
                     auto p = msg->add_chged_property_list();
-                    p->set_obj_id((std::get<0>(tuple))->GetUniId());
+                    p->set_obj_id((std::get<0>(tuple)).Get()->GetUniId());
                     p->set_property_type(kPropWeaponAmmo);
                     p->set_property_subtype(std::get<1>(tuple));
                     p->set_value(std::get<2>(tuple));
@@ -277,9 +277,9 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
                 auto& chg_hum = room->frame_event.chged_zombieids_[idx];
                 {
                     auto p = msg->add_chged_property_list();
-                    p->set_obj_id(chg_hum->GetUniId());
+                    p->set_obj_id(chg_hum.Get()->GetUniId());
                     p->set_property_type(kPropZombieId);
-                    p->set_value(chg_hum->meta->i->id());
+                    p->set_value(chg_hum.Get()->AsHuman()->meta->i->id());
                 }
             }
         }
@@ -293,14 +293,14 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(Human* hum)
         }
         for (size_t idx : hum->chged_cars_) {
             if (idx < room->frame_event.chged_cars_.size()) {
-                Human* target = room->frame_event.chged_cars_[idx];
-                if (hum->CanSee(target)) {
+                CreatureWeakPtr& target = room->frame_event.chged_cars_[idx];
+                if (target.Get() && target.Get()->IsHuman() && hum->CanSee(target.Get())) {
                     auto p = msg->add_chged_property_list();
-                    p->set_obj_id(target->GetUniId());
+                    p->set_obj_id(target.Get()->GetUniId());
                     p->set_property_type(kPropCar);
-                    if (target->GetCar()) {
-                        p->set_property_subtype(target->GetCar()->meta->i->id());
-                        p->set_value(target->GetSeat());
+                    if (target.Get()->AsHuman()->GetCar()) {
+                        p->set_property_subtype(target.Get()->AsHuman()->GetCar()->meta->i->id());
+                        p->set_value(target.Get()->AsHuman()->GetSeat());
                     } else {
                         p->set_property_subtype(0);
                         p->set_value(0);
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 3f6ffa0..fab0a84 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -1824,7 +1824,7 @@ void Human::ChangeToRace(RaceType_e race, int level)
 void Human::ChangeToRaceAndNotify(RaceType_e race, int level)
 {
     ChangeToRace(race, level);
-    room->frame_event.AddZombieIdChg(this);
+    room->frame_event.AddZombieIdChg(GetWeakPtrRef());
 }
 
 void Human::WinExp(Human* sender, int exp)
@@ -1866,7 +1866,7 @@ void Human::WinExp(Human* sender, int exp)
         }
     } while (true);
     if (old_meta != meta) {
-        room->frame_event.AddZombieIdChg(this);
+        room->frame_event.AddZombieIdChg(GetWeakPtrRef());
         OnMetaChange();
         if (GetRace() == kZombieRace && meta->i->level() == 3) {
             room->OnZombieAppear(this);
@@ -2654,7 +2654,7 @@ void Human::AddItem(int item_id, int item_num)
     }
 
     if (room && room->GetFrameNo() > join_frameno) {
-        room->frame_event.AddItemChg(this, item_id, items_[item_id]);
+        room->frame_event.AddItemChg(GetWeakPtrRef(), item_id, items_[item_id]);
     } else {
         if (item_num <= 0) {
             battling_items_.insert(item_id);
@@ -2667,7 +2667,7 @@ void Human::DecItem(int item_id, int item_num)
     auto itr = items_.find(item_id);
     if (itr != items_.end()) {
         itr->second -= item_num;
-        room->frame_event.AddItemChg(this, item_id, std::max(0, itr->second));
+        room->frame_event.AddItemChg(GetWeakPtrRef(), item_id, std::max(0, itr->second));
         if (itr->second <= 0) {
             if (battling_items_.find(item_id) == battling_items_.end()) {
                 items_.erase(itr);
diff --git a/server/gameserver/player.cc b/server/gameserver/player.cc
index b73b19c..3e39e59 100644
--- a/server/gameserver/player.cc
+++ b/server/gameserver/player.cc
@@ -380,7 +380,7 @@ void Player::UpdateSpectate()
 
 void Player::UpdateEmote()
 {
-    room->frame_event.AddEmote(this, emote_id);
+    room->frame_event.AddEmote(GetWeakPtrRef(), emote_id);
     emote = false;
     emote_id = 0;
 }