diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 79686f5..27cf07b 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -172,45 +172,57 @@ void Bullet::ProcBomb()
              }
          });
 
+    bool block = false;
     if (objects.empty()) {
-        float bullet_range = gun_meta->i->range();
-        if (gun_upgrade_meta && gun_upgrade_meta->GetAttrValue(gun_lv, kHAT_ShotRange) > 0) {
-            bullet_range += gun_upgrade_meta->GetAttrValue(gun_lv, kHAT_ShotRange);
-        }
         float distance = (GetPos() - born_pos).Norm();
-        if (distance >= bullet_range) {
-            #if 0
-            sender->SummonObstacle(0, GetPos());
-            #endif
+        if (distance >= fly_distance) {
+            block = true;
         }
-    } else {
-        switch (meta->i->_inventory_slot()) {
-        case 4:
-            {
-                //榴弹炮
-                a8::Vec2 bomb_pos = GetPos();
-                room->frame_event.AddExplosionEx(sender, meta->i->id(), bomb_pos,
-                                                 gun_meta->i->explosion_effect());
-                OnHit(objects);
-            }
-            break;
-        case 5:
-            {
-                //手雷
-                a8::Vec2 bomb_pos = GetPos();
-                room->frame_event.AddExplosion(this, meta->i->id(), bomb_pos);
-                OnHit(objects);
-            }
-            break;
-        case 6:
-            {
-                //烟雾弹
-                a8::Vec2 bomb_pos = GetPos();
-                room->frame_event.AddSmoke(this, meta->i->id(), bomb_pos);
-                ProcSmokeBomb();
-            }
-            break;
+    }
+    float delay_time = 0;
+    if (!block) {
+        delay_time = gun_meta->i->missiles_time();
+    }
+    switch (meta->i->_inventory_slot()) {
+    case IS_RPG:
+        {
+            //榴弹炮
+            a8::Vec2 bomb_pos = GetPos();
+            room->frame_event.AddExplosionEx(sender, meta->i->id(), bomb_pos,
+                                             gun_meta->i->explosion_effect());
+            OnHit(objects);
         }
+        break;
+    case IS_FRAG:
+        {
+            //手雷
+            ProcFragBomb(delay_time);
+        }
+        break;
+    case IS_SMOKE:
+        {
+            //烟雾弹
+            a8::Vec2 bomb_pos = GetPos();
+            room->frame_event.AddSmoke(this, meta->i->id(), bomb_pos);
+            ProcSmokeBomb();
+        }
+        break;
+    case IS_POSION_GAS_BOMB:
+        {
+            //毒气弹
+            a8::Vec2 bomb_pos = GetPos();
+            room->frame_event.AddSmoke(this, meta->i->id(), bomb_pos);
+            ProcPosionGasBomb(delay_time);
+        }
+        break;
+    case IS_MOLOTOR_COCKTAIL:
+        {
+            //燃烧瓶
+            a8::Vec2 bomb_pos = GetPos();
+            room->frame_event.AddSmoke(this, meta->i->id(), bomb_pos);
+            ProcMolotorCocktailBomb(delay_time);
+        }
+        break;
     }
     room->RemoveObjectLater(this);
 }
@@ -255,13 +267,12 @@ void Bullet::ProcSmokeBomb()
 
 bool Bullet::IsBomb()
 {
-    #if 0
-    ((metatable::Equip*)meta->i)->set__inventory_slot(6);
-    #endif
     return
-        meta->i->_inventory_slot() == 4 ||
-        meta->i->_inventory_slot() == 5 ||
-        meta->i->_inventory_slot() == 6;
+        meta->i->_inventory_slot() == IS_RPG ||
+        meta->i->_inventory_slot() == IS_FRAG ||
+        meta->i->_inventory_slot() == IS_SMOKE ||
+        meta->i->_inventory_slot() == IS_POSION_GAS_BOMB ||
+        meta->i->_inventory_slot() == IS_MOLOTOR_COCKTAIL;
 }
 
 void Bullet::MapServiceUpdate()
@@ -319,7 +330,7 @@ void Bullet::Check(float distance)
         bullet_range += gun_upgrade_meta->GetAttrValue(gun_lv, kHAT_ShotRange);
     }
     if (!objects.empty() || distance > bullet_range ||
-        (IsBomb() && meta->i->_inventory_slot() != 4 && distance >= fly_distance)
+        (IsBomb() && distance >= fly_distance)
         ) {
         if (IsBomb()) {
             ProcBomb();
@@ -332,3 +343,22 @@ void Bullet::Check(float distance)
         }
     }
 }
+
+void Bullet::ProcFragBomb(float delay_time)
+{
+    a8::Vec2 bomb_pos = GetPos();
+    room->frame_event.AddExplosion(this, meta->i->id(), bomb_pos);
+    #if 0
+    OnHit(objects);
+    #endif
+}
+
+void Bullet::ProcPosionGasBomb(float delay_time)
+{
+
+}
+
+void Bullet::ProcMolotorCocktailBomb(float delay_time)
+{
+
+}
diff --git a/server/gameserver/bullet.h b/server/gameserver/bullet.h
index aa70d76..8847e7c 100644
--- a/server/gameserver/bullet.h
+++ b/server/gameserver/bullet.h
@@ -42,6 +42,9 @@ protected:
     void OnHit(std::set<Entity*>& objects);
     void ProcBomb();
     void ProcSmokeBomb();
+    void ProcFragBomb(float delay_time);
+    void ProcPosionGasBomb(float delay_time);
+    void ProcMolotorCocktailBomb(float delay_time);
     bool IsBomb();
     inline void MapServiceUpdate();
     float GetAtk();
diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index 186903a..cd7d8fd 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -89,6 +89,8 @@ enum InventorySlot_e
     IS_SMOKE  = 6,
     IS_HEALTHKIT  = 7, //医疗包
     IS_PAIN_KILLER  = 8, //止痛药
+    IS_POSION_GAS_BOMB  = 9,
+    IS_MOLOTOR_COCKTAIL = 10,
 
     IS_1XSCOPE  = 12,
     IS_2XSCOPE  = 13,
diff --git a/server/gameserver/frag_mitask.cc b/server/gameserver/frag_mitask.cc
new file mode 100644
index 0000000..535b204
--- /dev/null
+++ b/server/gameserver/frag_mitask.cc
@@ -0,0 +1,41 @@
+#include "precompile.h"
+
+#include "frag_mitask.h"
+#include "room.h"
+#include "player.h"
+#include "metadata.h"
+
+void FragMiTask::Check()
+{
+    {
+        std::list<Player*> deleted_hums;
+        for (auto& hum : player_set) {
+            if (bomb_pos.Distance(hum->GetPos()) > gun_meta->i->bullet_rad() + hum->meta->i->radius()) {
+                hum->RemoveBuffByEffectId(kBET_HunLuan);
+                deleted_hums.push_back(hum);
+            }
+        }
+        for (auto& hum : deleted_hums) {
+            player_set.erase(hum);
+        }
+    }
+    room->TouchPlayerList
+        (a8::XParams(),
+         [this] (Player* hum, a8::XParams&) -> bool
+         {
+             if (bomb_pos.Distance(hum->GetPos()) < gun_meta->i->bullet_rad() + hum->meta->i->radius()) {
+                 if (!hum->HasBuffEffect(kBET_HunLuan)) {
+                     hum->AddBuff(nullptr, buff_meta, 1, nullptr);
+                     player_set.insert(hum);
+                 }
+             }
+             return true;
+         });
+}
+
+void FragMiTask::Done()
+{
+    for (auto& hum : player_set) {
+        hum->RemoveBuffByEffectId(kBET_HunLuan);
+    }
+}
diff --git a/server/gameserver/frag_mitask.h b/server/gameserver/frag_mitask.h
new file mode 100644
index 0000000..cf612dc
--- /dev/null
+++ b/server/gameserver/frag_mitask.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "microtask.h"
+
+namespace MetaData
+{
+    struct Buff;
+    struct Equip;
+}
+
+class Room;
+class Player;
+class FragMiTask : public MicroTask
+{
+ public:
+    Room* room = nullptr;
+    a8::Vec2 bomb_pos;
+    std::set<Player*> player_set;
+    MetaData::Buff* buff_meta = nullptr;
+    MetaData::Equip* gun_meta = nullptr;
+
+    void Check();
+    void Done();
+};
diff --git a/server/gameserver/molotor_cocktail_mitask.cc b/server/gameserver/molotor_cocktail_mitask.cc
new file mode 100644
index 0000000..b684270
--- /dev/null
+++ b/server/gameserver/molotor_cocktail_mitask.cc
@@ -0,0 +1,41 @@
+#include "precompile.h"
+
+#include "molotor_cocktail_mitask.h"
+#include "room.h"
+#include "player.h"
+#include "metadata.h"
+
+void MolotorCocktailMiTask::Check()
+{
+    {
+        std::list<Player*> deleted_hums;
+        for (auto& hum : player_set) {
+            if (bomb_pos.Distance(hum->GetPos()) > gun_meta->i->bullet_rad() + hum->meta->i->radius()) {
+                hum->RemoveBuffByEffectId(kBET_HunLuan);
+                deleted_hums.push_back(hum);
+            }
+        }
+        for (auto& hum : deleted_hums) {
+            player_set.erase(hum);
+        }
+    }
+    room->TouchPlayerList
+        (a8::XParams(),
+         [this] (Player* hum, a8::XParams&) -> bool
+         {
+             if (bomb_pos.Distance(hum->GetPos()) < gun_meta->i->bullet_rad() + hum->meta->i->radius()) {
+                 if (!hum->HasBuffEffect(kBET_HunLuan)) {
+                     hum->AddBuff(nullptr, buff_meta, 1, nullptr);
+                     player_set.insert(hum);
+                 }
+             }
+             return true;
+         });
+}
+
+void MolotorCocktailMiTask::Done()
+{
+    for (auto& hum : player_set) {
+        hum->RemoveBuffByEffectId(kBET_HunLuan);
+    }
+}
diff --git a/server/gameserver/molotor_cocktail_mitask.h b/server/gameserver/molotor_cocktail_mitask.h
new file mode 100644
index 0000000..a4ecdc1
--- /dev/null
+++ b/server/gameserver/molotor_cocktail_mitask.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "microtask.h"
+
+namespace MetaData
+{
+    struct Buff;
+    struct Equip;
+}
+
+class Room;
+class Player;
+class MolotorCocktailMiTask : public MicroTask
+{
+ public:
+    Room* room = nullptr;
+    a8::Vec2 bomb_pos;
+    std::set<Player*> player_set;
+    MetaData::Buff* buff_meta = nullptr;
+    MetaData::Equip* gun_meta = nullptr;
+
+    void Check();
+    void Done();
+};
diff --git a/server/gameserver/posiongas_mitask.cc b/server/gameserver/posiongas_mitask.cc
new file mode 100644
index 0000000..7e69042
--- /dev/null
+++ b/server/gameserver/posiongas_mitask.cc
@@ -0,0 +1,41 @@
+#include "precompile.h"
+
+#include "posiongas_mitask.h"
+#include "room.h"
+#include "player.h"
+#include "metadata.h"
+
+void PosionGasMiTask::Check()
+{
+    {
+        std::list<Player*> deleted_hums;
+        for (auto& hum : player_set) {
+            if (bomb_pos.Distance(hum->GetPos()) > gun_meta->i->bullet_rad() + hum->meta->i->radius()) {
+                hum->RemoveBuffByEffectId(kBET_HunLuan);
+                deleted_hums.push_back(hum);
+            }
+        }
+        for (auto& hum : deleted_hums) {
+            player_set.erase(hum);
+        }
+    }
+    room->TouchPlayerList
+        (a8::XParams(),
+         [this] (Player* hum, a8::XParams&) -> bool
+         {
+             if (bomb_pos.Distance(hum->GetPos()) < gun_meta->i->bullet_rad() + hum->meta->i->radius()) {
+                 if (!hum->HasBuffEffect(kBET_HunLuan)) {
+                     hum->AddBuff(nullptr, buff_meta, 1, nullptr);
+                     player_set.insert(hum);
+                 }
+             }
+             return true;
+         });
+}
+
+void PosionGasMiTask::Done()
+{
+    for (auto& hum : player_set) {
+        hum->RemoveBuffByEffectId(kBET_HunLuan);
+    }
+}
diff --git a/server/gameserver/posiongas_mitask.h b/server/gameserver/posiongas_mitask.h
new file mode 100644
index 0000000..e771abe
--- /dev/null
+++ b/server/gameserver/posiongas_mitask.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "microtask.h"
+
+namespace MetaData
+{
+    struct Buff;
+    struct Equip;
+}
+
+class Room;
+class Player;
+class PosionGasMiTask : public MicroTask
+{
+ public:
+    Room* room = nullptr;
+    a8::Vec2 bomb_pos;
+    std::set<Player*> player_set;
+    MetaData::Buff* buff_meta = nullptr;
+    MetaData::Equip* gun_meta = nullptr;
+
+    void Check();
+    void Done();
+};