diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index 1b86bd3..a56794f 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -82,7 +82,9 @@ enum InventorySlot_e
     IS_2XSCOPE  = 13,
     IS_4XSCOPE  = 14,
     IS_8XSCOPE  = 15,
-    IS_15XSCOPE  = 16,
+    IS_15XSCOPE = 16,
+
+    IS_END
 };
 
 const char* const PROJ_NAME_FMT = "game%d_gameserver";
@@ -98,7 +100,6 @@ const int SERVER_FRAME_RATE = 20;
 const int SYNC_FRAME_RATE = 10;
 const float FRAME_RATE_MS = 1000.0f / SERVER_FRAME_RATE;
 
-const int MAX_INVENTORY_NUM = 17;
 const int MAX_WEAPON_NUM = 5;
 
 const int GUN_SLOT1 = 1;
diff --git a/server/gameserver/global.cc b/server/gameserver/global.cc
index 3a40f38..14f96c9 100755
--- a/server/gameserver/global.cc
+++ b/server/gameserver/global.cc
@@ -30,3 +30,8 @@ bool Global::IsTimeToReset(int time)
 int Global::g_nowtime = time(nullptr);
 int Global::g_time_zone = 8;
 bool Global::g_shutdown = false;
+
+bool IsValidSlotId(int slot_id)
+{
+    return slot_id >= 0 && slot_id < IS_END;
+}
diff --git a/server/gameserver/global.h b/server/gameserver/global.h
index f4fe915..9d9df3c 100755
--- a/server/gameserver/global.h
+++ b/server/gameserver/global.h
@@ -18,3 +18,5 @@ class Global : public a8::Singleton<Global>
     static int g_time_zone; // 默认东八区
     static bool g_shutdown;
 };
+
+bool IsValidSlotId(int slot_id);
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 7819a08..b56e31c 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -27,11 +27,7 @@ Human::Human()
     }
     weapons[0] = default_weapon;
     curr_weapon = &weapons[0];
-    inventory.reserve(MAX_INVENTORY_NUM);
-    for (size_t i = 0; i < MAX_INVENTORY_NUM; ++i) {
-        inventory.push_back(0);
-    }
-    inventory[12] = 1;
+    inventory_[IS_1XSCOPE] = 1;
 }
 
 Human::~Human()
@@ -42,6 +38,7 @@ void Human::Initialize()
 {
     Entity::Initialize();
     RecalcSelfCollider();
+    volume_ = meta->volume;
 }
 
 float Human::GetSpeed()
@@ -190,8 +187,8 @@ void Human::Shot(Vector2D& target_dir)
     case 5:
         {
             //手雷
-            if (inventory[slot_id] > 0) {
-                --inventory[slot_id];
+            if (GetInventory(slot_id) > 0) {
+                DecInventory(slot_id, 1);
                 ++curr_weapon->ammo;
             } else {
                 int weapon_idx = curr_weapon->weapon_idx;
@@ -211,8 +208,8 @@ void Human::Shot(Vector2D& target_dir)
     case 6:
         {
             //烟雾弹
-            if (inventory[slot_id] > 0) {
-                --inventory[slot_id];
+            if (GetInventory(slot_id) > 0) {
+                DecInventory(slot_id, 1);
                 ++curr_weapon->ammo;
             } else {
                 int weapon_idx = curr_weapon->weapon_idx;
@@ -384,9 +381,9 @@ void Human::AutoLoadingBullet(bool manual)
         MetaData::Equip* bullet_meta = MetaMgr::Instance()->GetEquip(curr_weapon->meta->i->use_bullet());
         if (bullet_meta &&
             bullet_meta->i->_inventory_slot() >= 0 &&
-            bullet_meta->i->_inventory_slot() < MAX_INVENTORY_NUM
+            bullet_meta->i->_inventory_slot() < inventory_.size()
             ) {
-            if (inventory[bullet_meta->i->_inventory_slot()] > 0) {
+            if (GetInventory(bullet_meta->i->_inventory_slot()) > 0) {
                 StartAction(AT_Reload,
                             curr_weapon->meta->i->reload_time(),
                             curr_weapon->weapon_id,
@@ -776,7 +773,7 @@ void Human::FillMFActivePlayerData(cs::MFActivePlayerData* player_data)
         auto p = player_data->add_weapons();
         weapon.ToPB(p);
     }
-    for (auto& num : inventory) {
+    for (auto& num : inventory_) {
         player_data->add_inventory(num);
     }
     if (pain_killer_timer) {
@@ -839,3 +836,47 @@ void Human::RecalcAttr()
         def += helmet_meta->i->def();
     }
 }
+
+void Human::RecalcVolume()
+{
+    MetaData::Equip* backpack_meta = MetaMgr::Instance()->GetEquip(backpack);
+    if (backpack_meta) {
+        for (size_t i = 0; i < backpack_meta->volume.size(); ++i) {
+            volume_[i] = meta->volume[i] + backpack_meta->volume[i];
+        }
+    }
+}
+
+int Human::GetInventory(int slot_id)
+{
+    if (!IsValidSlotId(slot_id)) {
+        abort();
+    }
+    return inventory_[slot_id];
+}
+
+void Human::AddInventory(int slot_id, int num)
+{
+    assert(num > 0);
+    if (!IsValidSlotId(slot_id)) {
+        abort();
+    }
+    inventory_[slot_id] += num;
+}
+
+void Human::DecInventory(int slot_id, int num)
+{
+    assert(num > 0);
+    if (!IsValidSlotId(slot_id)) {
+        abort();
+    }
+    inventory_[slot_id] -= num;
+}
+
+int Human::GetVolume(int slot_id)
+{
+    if (!IsValidSlotId(slot_id)) {
+        abort();
+    }
+    return volume_[slot_id];
+}
diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index 66aad2e..a6a27c4 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -65,7 +65,6 @@ class Human : public Entity
     Weapon* curr_weapon = nullptr;
 
     int curr_scope_idx = 0;
-    std::vector<int> inventory;
 
     bool need_sync_team_data = false;
     bool need_sync_teammate_data = false;
@@ -132,9 +131,16 @@ class Human : public Entity
     void FillMFGasData(cs::MFGasData* gas_data);
     bool CanSee(Human* hum);
     void RecalcAttr();
+    void RecalcVolume();
+    int GetInventory(int slot_id);
+    void AddInventory(int slot_id, int num);
+    void DecInventory(int slot_id, int num);
+    int GetVolume(int slot_id);
 
 protected:
     long long last_shot_frameno_ = 0;
+    std::array<int, IS_END - 1> inventory_ = {};
+    std::array<int, IS_END> volume_ = {};
     std::set<Entity*> new_objects;
     std::set<Entity*> part_objects;
     std::set<int> del_objects;
diff --git a/server/gameserver/metadata.cc b/server/gameserver/metadata.cc
index 98ac813..53ea3c3 100644
--- a/server/gameserver/metadata.cc
+++ b/server/gameserver/metadata.cc
@@ -46,17 +46,55 @@ namespace MetaData
 
     void Equip::Init()
     {
-        std::vector<std::string> strings;
-        a8::Split(i->bullet_born_offset(), strings, '|');
-        for (auto& str : strings) {
-            std::vector<std::string> strings2;
-            a8::Split(str, strings2, ':');
-            assert(strings2.size() == 2);
-            bullet_born_offset.push_back(std::make_tuple(
-                                                         a8::XValue(strings2[0]).GetDouble(),
-                                                         a8::XValue(strings2[1]).GetDouble()
-                                                         )
-                                         );
+        {
+            std::vector<std::string> strings;
+            a8::Split(i->bullet_born_offset(), strings, '|');
+            for (auto& str : strings) {
+                std::vector<std::string> strings2;
+                a8::Split(str, strings2, ':');
+                assert(strings2.size() == 2);
+                bullet_born_offset.push_back(std::make_tuple(
+                                                             a8::XValue(strings2[0]).GetDouble(),
+                                                             a8::XValue(strings2[1]).GetDouble()
+                                                             )
+                                             );
+            }
+        }
+        {
+            std::vector<std::string> strings;
+            a8::Split(i->volume(), strings, '|');
+            for (auto& str : strings) {
+                std::vector<std::string> strings2;
+                a8::Split(str, strings2, ':');
+                assert(strings2.size() == 2);
+                if (strings2.size() >= 2) {
+                    int slot = a8::XValue(strings2[0]);
+                    int num = a8::XValue(strings2[1]);
+                    if (slot >= 0 && slot < volume.size()){
+                        volume[slot] = num;
+                    }
+                }
+            }
+        }
+    }
+
+    void Player::Init()
+    {
+        {
+            std::vector<std::string> strings;
+            a8::Split(i->volume(), strings, '|');
+            for (auto& str : strings) {
+                std::vector<std::string> strings2;
+                a8::Split(str, strings2, ':');
+                assert(strings2.size() == 2);
+                if (strings2.size() >= 2) {
+                    int slot = a8::XValue(strings2[0]);
+                    int num = a8::XValue(strings2[1]);
+                    if (slot >= 0 && slot < volume.size()){
+                        volume[slot] = num;
+                    }
+                }
+            }
         }
     }
 
diff --git a/server/gameserver/metadata.h b/server/gameserver/metadata.h
index 3d58d2e..03a7589 100755
--- a/server/gameserver/metadata.h
+++ b/server/gameserver/metadata.h
@@ -47,6 +47,7 @@ namespace MetaData
         const metatable::Equip* i = nullptr;
 
         std::vector<std::tuple<float, float>> bullet_born_offset;
+        std::array<int, IS_END> volume = {};
 
         void Init();
     };
@@ -54,6 +55,10 @@ namespace MetaData
     struct Player
     {
         const metatable::Player* i = nullptr;
+
+        std::array<int, IS_END> volume = {};
+
+        void Init();
     };
 
     struct Building
diff --git a/server/gameserver/metamgr.cc b/server/gameserver/metamgr.cc
index 1bbb55b..c519259 100755
--- a/server/gameserver/metamgr.cc
+++ b/server/gameserver/metamgr.cc
@@ -151,6 +151,7 @@ private:
         for (auto& meta : player_meta_list) {
             MetaData::Player& item = a8::FastAppend(player_list);
             item.i = &meta;
+            item.Init();
             player_hash[item.i->id()] = &item;
         }
 
diff --git a/server/gameserver/player.cc b/server/gameserver/player.cc
index fe4c3c4..20bd90c 100644
--- a/server/gameserver/player.cc
+++ b/server/gameserver/player.cc
@@ -192,16 +192,16 @@ void Player::UpdateAction()
                         int ammo = curr_weapon->ammo;
                         if (ammo < curr_weapon->meta->i->clip_volume()) {
                             if (bullet_meta->i->_inventory_slot() >= 0 &&
-                                bullet_meta->i->_inventory_slot() < MAX_INVENTORY_NUM) {
-                                if (inventory[bullet_meta->i->_inventory_slot()] > 0) {
+                                bullet_meta->i->_inventory_slot() < IS_END) {
+                                if (GetInventory(bullet_meta->i->_inventory_slot()) > 0) {
                                     int add_num = 0;
-                                    if (inventory[bullet_meta->i->_inventory_slot()] <=
+                                    if (GetInventory(bullet_meta->i->_inventory_slot()) <=
                                         curr_weapon->meta->i->clip_volume() - ammo) {
-                                        add_num = inventory[bullet_meta->i->_inventory_slot()];
-                                        inventory[bullet_meta->i->_inventory_slot()] -= add_num;
+                                        add_num = GetInventory(bullet_meta->i->_inventory_slot());
+                                        DecInventory(bullet_meta->i->_inventory_slot(), add_num);
                                     } else {
                                         add_num = curr_weapon->meta->i->clip_volume() - ammo;
-                                        inventory[bullet_meta->i->_inventory_slot()] -= add_num;
+                                        DecInventory(bullet_meta->i->_inventory_slot(), add_num);
                                     }
                                     curr_weapon->ammo += add_num;
                                     need_sync_active_player = true;;
@@ -219,12 +219,12 @@ void Player::UpdateAction()
                     {
                         MetaData::Equip* item_meta = MetaMgr::Instance()->GetEquipBySlotId(action_item_id);
                         if (item_meta){
-                            if (inventory[item_meta->i->_inventory_slot()] > 0) {
+                            if (GetInventory(item_meta->i->_inventory_slot()) > 0) {
                                 float old_health = health;
                                 health += item_meta->i->heal();
                                 health = std::min(health, GetMaxHP());
                                 stats.heal_amount += health - old_health;
-                                --inventory[item_meta->i->_inventory_slot()];
+                                DecInventory(item_meta->i->_inventory_slot(), 1);
                                 need_sync_active_player = true;
                                 SyncAroundPlayers();
                             }
@@ -235,7 +235,7 @@ void Player::UpdateAction()
                     {
                         MetaData::Equip* item_meta = MetaMgr::Instance()->GetEquipBySlotId(action_item_id);
                         if (item_meta){
-                            if (inventory[item_meta->i->_inventory_slot()] > 0) {
+                            if (GetInventory(item_meta->i->_inventory_slot()) > 0) {
                                 if (pain_killer_timer) {
                                     int passed_time = (room->frame_no - pain_killer_frameno) * FRAME_RATE_MS;
                                     int left_time = std::max(0, pain_killer_lastingtime * 1000 - passed_time);
@@ -267,7 +267,7 @@ void Player::UpdateAction()
                                                                                              &xtimer_attacher.timer_list_
                                                                                              );
                                 }
-                                --inventory[item_meta->i->_inventory_slot()];
+                                DecInventory(item_meta->i->_inventory_slot(), 1);
                                 need_sync_active_player = true;
                             }
                         }
@@ -317,7 +317,7 @@ void Player::UpdateCancelAction()
 
 void Player::UpdateUseItemIdx()
 {
-    if (use_item_idx >= 0 && use_item_idx < MAX_INVENTORY_NUM) {
+    if (use_item_idx >= 0 && use_item_idx < IS_END) {
         switch (use_item_idx) {
         case IS_HEALTHKIT:
             {
@@ -450,8 +450,8 @@ void Player::Shot()
     case 5:
         {
             //手雷
-            if (inventory[slot_id] > 0) {
-                --inventory[slot_id];
+            if (GetInventory(slot_id) > 0) {
+                DecInventory(slot_id, 1);
                 ++curr_weapon->ammo;
             } else {
                 int weapon_idx = curr_weapon->weapon_idx;
@@ -471,8 +471,8 @@ void Player::Shot()
     case 6:
         {
             //烟雾弹
-            if (inventory[slot_id] > 0) {
-                --inventory[slot_id];
+            if (GetInventory(slot_id) > 0) {
+                DecInventory(slot_id, 1);
                 ++curr_weapon->ammo;
             } else {
                 int weapon_idx = curr_weapon->weapon_idx;
@@ -560,7 +560,8 @@ void Player::ObstacleInteraction(Obstacle* entity)
 
 void Player::LootInteraction(Loot* entity)
 {
-    if (entity->pickuped) {
+    if (entity->pickuped ||
+        entity->count <= 0) {
         return;
     }
     MetaData::Equip* item_meta = MetaMgr::Instance()->GetEquip(entity->item_id);
@@ -629,8 +630,20 @@ void Player::LootInteraction(Loot* entity)
     default:
         {
             if (item_meta->i->_inventory_slot() >= 0 &&
-                item_meta->i->_inventory_slot() < MAX_INVENTORY_NUM) {
-                inventory[item_meta->i->_inventory_slot()] += entity->count;
+                item_meta->i->_inventory_slot() < IS_END) {
+                if (GetInventory(item_meta->i->_inventory_slot()) >=
+                    GetVolume(item_meta->i->_inventory_slot())
+                    ) {
+                    cs::SMPickup notifymsg;
+                    notifymsg.set_error_code(1);
+                    SendNotifyMsg(notifymsg);
+                    return;
+                }
+                int add_num = GetVolume(item_meta->i->_inventory_slot()) -
+                    GetInventory(item_meta->i->_inventory_slot());
+                add_num = std::min(entity->count, add_num);
+
+                AddInventory(item_meta->i->_inventory_slot(), add_num);
                 if (item_meta->i->_inventory_slot() == 5 ||
                     item_meta->i->_inventory_slot() == 6) {
                     Weapon* weapon = &weapons[3 + (item_meta->i->_inventory_slot() - 5)];
@@ -639,7 +652,7 @@ void Player::LootInteraction(Loot* entity)
                         weapon->weapon_lv = 1;
                         weapon->ammo += entity->count;
                         weapon->meta = item_meta;
-                        inventory[item_meta->i->_inventory_slot()] -= entity->count;
+                        DecInventory(item_meta->i->_inventory_slot(), add_num);
                     }
                 }
                 if (item_meta->i->_inventory_slot() > 12) {
@@ -647,6 +660,12 @@ void Player::LootInteraction(Loot* entity)
                         curr_scope_idx = item_meta->i->_inventory_slot() - 12;
                     }
                 }
+                if (add_num < entity->count) {
+                    //刷新数量
+                    entity->count -= add_num;
+                    entity->BroadcastFullState();
+                    return;
+                }
             } else {
                 switch (item_meta->i->equip_type()) {
                 case 7:
@@ -660,6 +679,7 @@ void Player::LootInteraction(Loot* entity)
                             room->DropItem(pos, old_item_meta->i->id(), 1);
                         }
                         backpack = item_meta->i->id();
+                        RecalcVolume();
                     }
                     break;
                 case 4:
@@ -894,8 +914,8 @@ void Player::UpdateDropWeapon()
 
 void Player::UpdateUseScope()
 {
-    if (12 + use_scope_idx >= 12 && 12 + use_scope_idx < 16) {
-        if (inventory[12 + use_scope_idx] > 0) {
+    if (IS_1XSCOPE + use_scope_idx >= IS_1XSCOPE && IS_1XSCOPE + use_scope_idx <= IS_15XSCOPE) {
+        if (GetInventory(IS_1XSCOPE + use_scope_idx) > 0) {
             curr_scope_idx = use_scope_idx;
             need_sync_active_player = true;
         }
diff --git a/server/tools/protobuild/metatable.proto b/server/tools/protobuild/metatable.proto
index e9bc105..1304e61 100755
--- a/server/tools/protobuild/metatable.proto
+++ b/server/tools/protobuild/metatable.proto
@@ -64,7 +64,7 @@ message Equip
     optional int32 use_time = 15; //使用时间
     optional int32 heal = 16; //瞬间生命恢复
     optional int32 time = 17; //时间
-    optional int32 volume = 19; //装备容量
+    optional string volume = 19; //装备容量
     optional int32 bullet_rad = 20; //子弹半径
     optional string bullet_born_offset = 30; //子弹出生偏移
 
@@ -79,6 +79,7 @@ message Player
     optional int32 health = 3; //初始血量
     optional int32 move_speed = 4; //移动速度
     optional float def = 5; //防御
+    optional string volume = 6; //初始库存
 }
 
 message Skill