diff --git a/game/builtin/item.go b/game/builtin/item.go
index d9b7e3d..398efbd 100644
--- a/game/builtin/item.go
+++ b/game/builtin/item.go
@@ -1,24 +1,22 @@
 package builtin
 
-func NewItem[ItemID comparable](id ItemID, options ...ItemOption[ItemID]) *Item[ItemID] {
+import "github.com/kercylan98/minotaur/game"
+
+func NewItem[ItemID comparable](id ItemID) *Item[ItemID] {
 	item := &Item[ItemID]{
 		id: id,
 	}
-	for _, option := range options {
-		option(item)
-	}
 	return item
 }
 
 type Item[ItemID comparable] struct {
-	id   ItemID
-	guid int64
+	id ItemID
 }
 
 func (slf *Item[ItemID]) GetID() ItemID {
 	return slf.id
 }
 
-func (slf *Item[ItemID]) GetGUID() int64 {
-	return slf.guid
+func (slf *Item[ItemID]) IsSame(item game.Item[ItemID]) bool {
+	return slf.id == item.GetID()
 }
diff --git a/game/builtin/item_container.go b/game/builtin/item_container.go
index fa6b056..d8b3a3a 100644
--- a/game/builtin/item_container.go
+++ b/game/builtin/item_container.go
@@ -3,12 +3,14 @@ package builtin
 import (
 	"github.com/kercylan98/minotaur/game"
 	"github.com/kercylan98/minotaur/utils/huge"
-	"github.com/kercylan98/minotaur/utils/slice"
+	"sync/atomic"
 )
 
 func NewItemContainer[ItemID comparable, Item game.Item[ItemID]](options ...ItemContainerOption[ItemID, Item]) *ItemContainer[ItemID, Item] {
 	itemContainer := &ItemContainer[ItemID, Item]{
-		items: map[ItemID]map[int64]*ItemContainerMember[ItemID]{},
+		items:         map[int64]*ItemContainerMember[ItemID, Item]{},
+		itemIdGuidRef: map[ItemID]map[int64]bool{},
+		stackLimits:   map[ItemID]*huge.Int{},
 	}
 	for _, option := range options {
 		option(itemContainer)
@@ -17,137 +19,128 @@ func NewItemContainer[ItemID comparable, Item game.Item[ItemID]](options ...Item
 }
 
 type ItemContainer[ItemID comparable, Item game.Item[ItemID]] struct {
-	sizeLimit  int
-	size       int
-	expandSize int
-	items      map[ItemID]map[int64]*ItemContainerMember[ItemID]
-	sort       []*itemContainerSort[ItemID]
+	guid          atomic.Int64
+	sizeLimit     int
+	size          int
+	expandSize    int
+	items         map[int64]*ItemContainerMember[ItemID, Item]
+	itemIdGuidRef map[ItemID]map[int64]bool
+	sort          []*itemContainerSort[ItemID]
+	stackLimits   map[ItemID]*huge.Int
 }
 
 func (slf *ItemContainer[ItemID, Item]) GetSize() int {
-	return slf.size
+	return slf.size + slf.expandSize
+}
+
+func (slf *ItemContainer[ItemID, Item]) GetSizeLimit() int {
+	return slf.sizeLimit
 }
 
 func (slf *ItemContainer[ItemID, Item]) SetExpandSize(size int) {
 	slf.expandSize = size
 }
 
-func (slf *ItemContainer[ItemID, Item]) GetSizeLimit() int {
-	return slf.sizeLimit + slf.expandSize
-}
-
-func (slf *ItemContainer[ItemID, Item]) GetItem(id ItemID) (game.ItemContainerMember[ItemID], error) {
-	for _, member := range slf.items[id] {
-		return member, nil
-	}
-	return nil, ErrItemNotExist
-}
-
-func (slf *ItemContainer[ItemID, Item]) GetItemWithGuid(id ItemID, guid int64) (game.ItemContainerMember[ItemID], error) {
-	member, exist := slf.items[id][guid]
+func (slf *ItemContainer[ItemID, Item]) GetItem(guid int64) (game.ItemContainerMember[ItemID, Item], error) {
+	item, exist := slf.items[guid]
 	if !exist {
 		return nil, ErrItemNotExist
 	}
-	return member, nil
+	return item, nil
 }
 
-func (slf *ItemContainer[ItemID, Item]) GetItems() []game.ItemContainerMember[ItemID] {
-	var items []game.ItemContainerMember[ItemID]
-	for _, sort := range slf.sort {
-		items = append(items, slf.items[sort.id][sort.guid])
+func (slf *ItemContainer[ItemID, Item]) GetItems() []game.ItemContainerMember[ItemID, Item] {
+	//TODO implement me
+	panic("implement me")
+}
+
+func (slf *ItemContainer[ItemID, Item]) GetItemsMap() map[int64]game.ItemContainerMember[ItemID, Item] {
+	var m = make(map[int64]game.ItemContainerMember[ItemID, Item])
+	for k, v := range slf.items {
+		m[k] = v
 	}
-	return items
+	return m
+}
+
+func (slf *ItemContainer[ItemID, Item]) ExistItem(guid int64) bool {
+	_, exist := slf.items[guid]
+	return exist
+}
+
+func (slf *ItemContainer[ItemID, Item]) ExistItemWithID(id ItemID) bool {
+	return len(slf.itemIdGuidRef[id]) > 0
 }
 
 func (slf *ItemContainer[ItemID, Item]) AddItem(item Item, count *huge.Int) error {
 	if count.LessThanOrEqualTo(huge.IntZero) {
-		return ErrCannotAddNegativeItem
+		return ErrCannotAddNegativeOrZeroItem
 	}
-	members, exist := slf.items[item.GetID()]
-	if !exist {
-		members = map[int64]*ItemContainerMember[ItemID]{}
-		slf.items[item.GetID()] = members
-
-	}
-	member, exist := members[item.GetGUID()]
-	if !exist {
-		if slf.GetSizeLimit() >= slf.GetSize() {
-			return ErrItemContainerIsFull
+	for guid := range slf.itemIdGuidRef[item.GetID()] {
+		member := slf.items[guid]
+		if member.GetItem().IsSame(item) {
+			member.count = member.count.Add(count)
+			return nil
 		}
-		members[item.GetGUID()] = &ItemContainerMember[ItemID]{
-			sort:  len(slf.sort),
-			Item:  item,
-			count: count,
-		}
-		slf.sort = append(slf.sort, &itemContainerSort[ItemID]{
-			id:   item.GetID(),
-			guid: item.GetGUID(),
-		})
-		slf.size++
-	} else {
-		member.count = member.count.Add(count)
 	}
+	if slf.size >= slf.GetSizeLimit() {
+		return ErrItemContainerIsFull
+	}
+	guid := slf.guid.Add(1)
+	slf.items[guid] = &ItemContainerMember[ItemID, Item]{
+		item:  item,
+		guid:  guid,
+		count: count.Copy(),
+	}
+	guids, exist := slf.itemIdGuidRef[item.GetID()]
+	if !exist {
+		guids = map[int64]bool{}
+		slf.itemIdGuidRef[item.GetID()] = guids
+	}
+	guids[guid] = true
+	slf.size++
 	return nil
 }
 
-func (slf *ItemContainer[ItemID, Item]) DeductItem(id ItemID, count *huge.Int) error {
-	members, exist := slf.items[id]
-	if !exist || len(members) == 0 {
+func (slf *ItemContainer[ItemID, Item]) DeductItem(guid int64, count *huge.Int) error {
+	if !slf.ExistItem(guid) {
 		return ErrItemNotExist
 	}
-
-	var backupMembers = make(map[int64]*ItemContainerMember[ItemID])
-	var pending = count.Copy()
-	var deductMembers []*ItemContainerMember[ItemID]
-	for guid, member := range members {
-		member.bakCount = member.count.Copy()
-		backupMembers[guid] = member
-
-		if pending.GreaterThanOrEqualTo(member.count) {
-			pending = pending.Sub(member.count)
-			member.count = huge.IntZero
-		} else {
-			member.count = member.count.Sub(pending)
-			pending = huge.IntZero
-		}
-
-		if member.count.EqualTo(huge.IntZero) {
-			delete(members, guid)
-			deductMembers = append(deductMembers, member)
-		}
-		if pending.EqualTo(huge.IntZero) {
-			break
-		}
-	}
-	if pending.GreaterThan(huge.IntZero) {
-		for guid, member := range backupMembers {
-			members[guid] = member
-			member.count = member.bakCount
-			member.bakCount = nil
-		}
-		return ErrItemInsufficientQuantity
-	}
-	slf.size -= len(deductMembers)
-	for _, member := range deductMembers {
-		slice.Del(&slf.sort, member.sort)
-	}
-	return nil
-}
-
-func (slf *ItemContainer[ItemID, Item]) DeductItemWithGuid(id ItemID, guid int64, count *huge.Int) error {
-	member, exist := slf.items[id][guid]
-	if !exist {
-		return ErrItemNotExist
-	}
-	if count.GreaterThan(member.count) {
-		return ErrItemInsufficientQuantity
-	} else {
+	member := slf.items[guid]
+	if member.count.GreaterThanOrEqualTo(count) {
 		member.count = member.count.Sub(count)
+		if member.count.EqualTo(huge.IntZero) {
+			slf.size--
+			delete(slf.items, guid)
+		}
+		return nil
+	} else {
+		var need = count.Copy()
+		var handles []func()
+		var guids = slf.itemIdGuidRef[member.GetID()]
+		for guid := range guids {
+			member := slf.items[guid]
+			if need.GreaterThanOrEqualTo(member.count) {
+				need = need.Sub(member.count)
+				handles = append(handles, func() {
+					member.count = huge.IntZero.Copy()
+					slf.size--
+					delete(guids, guid)
+					delete(slf.items, guid)
+					if len(guids) == 0 {
+						delete(slf.itemIdGuidRef, member.GetID())
+					}
+				})
+			} else {
+				member.count = member.count.Sub(need)
+				need = huge.IntZero
+			}
+		}
+		if need.GreaterThan(huge.IntZero) {
+			return ErrItemInsufficientQuantity
+		}
+		for _, handle := range handles {
+			handle()
+		}
+		return nil
 	}
-	if member.count.EqualTo(huge.IntZero) {
-		delete(slf.items[id], guid)
-		slice.Del(&slf.sort, member.sort)
-		slf.size--
-	}
-	return nil
 }
diff --git a/game/builtin/item_container_errors.go b/game/builtin/item_container_errors.go
index 2201203..8c22915 100644
--- a/game/builtin/item_container_errors.go
+++ b/game/builtin/item_container_errors.go
@@ -3,8 +3,8 @@ package builtin
 import "errors"
 
 var (
-	ErrCannotAddNegativeItem    = errors.New("cannot add items with negative quantities")
-	ErrItemNotExist             = errors.New("item not exist")
-	ErrItemInsufficientQuantity = errors.New("item insufficient quantity")
-	ErrItemContainerIsFull      = errors.New("item container is full")
+	ErrCannotAddNegativeOrZeroItem = errors.New("cannot add items with negative quantities or zero")
+	ErrItemNotExist                = errors.New("item not exist")
+	ErrItemInsufficientQuantity    = errors.New("item insufficient quantity")
+	ErrItemContainerIsFull         = errors.New("item container is full")
 )
diff --git a/game/builtin/item_container_member.go b/game/builtin/item_container_member.go
index df7d9ab..578cc35 100644
--- a/game/builtin/item_container_member.go
+++ b/game/builtin/item_container_member.go
@@ -5,13 +5,33 @@ import (
 	"github.com/kercylan98/minotaur/utils/huge"
 )
 
-type ItemContainerMember[ItemID comparable] struct {
-	game.Item[ItemID]
+func NewItemContainerMember[ItemID comparable, I game.Item[ItemID]](guid int64, item I) *ItemContainerMember[ItemID, I] {
+	return &ItemContainerMember[ItemID, I]{
+		item: item,
+		guid: guid,
+	}
+}
+
+type ItemContainerMember[ItemID comparable, I game.Item[ItemID]] struct {
+	item     I
+	guid     int64
 	sort     int
 	count    *huge.Int
 	bakCount *huge.Int
 }
 
-func (slf *ItemContainerMember[ItemID]) GetCount() *huge.Int {
+func (slf *ItemContainerMember[ItemID, I]) GetID() ItemID {
+	return slf.item.GetID()
+}
+
+func (slf *ItemContainerMember[ItemID, I]) GetGUID() int64 {
+	return slf.guid
+}
+
+func (slf *ItemContainerMember[ItemID, I]) GetCount() *huge.Int {
 	return slf.count.Copy()
 }
+
+func (slf *ItemContainerMember[ItemID, I]) GetItem() I {
+	return slf.item
+}
diff --git a/game/builtin/item_options.go b/game/builtin/item_options.go
deleted file mode 100644
index 1f2e3a9..0000000
--- a/game/builtin/item_options.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package builtin
-
-type ItemOption[ItemID comparable] func(item *Item[ItemID])
-
-// WithItemGuid 通过特定的guid创建物品
-func WithItemGuid[ItemID comparable](guid int64) ItemOption[ItemID] {
-	return func(item *Item[ItemID]) {
-		item.guid = guid
-	}
-}
diff --git a/game/item.go b/game/item.go
index be78ba6..5605c53 100644
--- a/game/item.go
+++ b/game/item.go
@@ -3,8 +3,6 @@ package game
 type Item[ID comparable] interface {
 	// GetID 获取物品ID
 	GetID() ID
-	// GetGUID 获取物品GUID
-	//  - 用于标识同一件物品不同的特征
-	//  - 负数的GUID在内置功能中可能会被用于特殊判定，如果需要负数建议另外对特殊功能进行实现
-	GetGUID() int64
+	// IsSame 与另一个物品比较是否相同
+	IsSame(item Item[ID]) bool
 }
diff --git a/game/item_container.go b/game/item_container.go
index a87c659..33ea5b5 100644
--- a/game/item_container.go
+++ b/game/item_container.go
@@ -12,20 +12,18 @@ type ItemContainer[ItemID comparable, I Item[ItemID]] interface {
 	SetExpandSize(size int)
 
 	// GetItem 获取物品
-	GetItem(id ItemID) (ItemContainerMember[ItemID], error)
-	// GetItemWithGuid 根据guid获取物品
-	GetItemWithGuid(id ItemID, guid int64) (ItemContainerMember[ItemID], error)
+	GetItem(guid int64) (ItemContainerMember[ItemID, I], error)
 	// GetItems 获取所有物品
-	GetItems() []ItemContainerMember[ItemID]
+	GetItems() []ItemContainerMember[ItemID, I]
+	// GetItemsMap 获取所有物品
+	GetItemsMap() map[int64]ItemContainerMember[ItemID, I]
+	// ExistItem 物品是否存在
+	ExistItem(guid int64) bool
+	// ExistItemWithID 是否存在特定ID的物品
+	ExistItemWithID(id ItemID) bool
 
 	// AddItem 添加物品
-	//  - 当物品guid相同时，如果相同物品id及guid的堆叠数量未达到上限，将增加数量，否则增加非堆叠数量
-	//  - 当物品guid不同时，堆叠将不可用，每次都将增加非堆叠数量
 	AddItem(item I, count *huge.Int) error
 	// DeductItem 扣除特定物品数量，当数量为0将被移除，数量不足时将不进行任何改变
-	//  - 将查找特定id的物品，无论guid是否相同，都有可能被扣除直到达到扣除数量
-	//  - 当count为负数时，由于负负得正，无论guid是否相同，都有可能被增加物品数量直到达到扣除数量
-	DeductItem(id ItemID, count *huge.Int) error
-	// DeductItemWithGuid 更为精准的扣除特定物品数量，可参考 DeductItem
-	DeductItemWithGuid(id ItemID, guid int64, count *huge.Int) error
+	DeductItem(guid int64, count *huge.Int) error
 }
diff --git a/game/item_container_member.go b/game/item_container_member.go
index 0c512f2..78301c1 100644
--- a/game/item_container_member.go
+++ b/game/item_container_member.go
@@ -3,8 +3,13 @@ package game
 import "github.com/kercylan98/minotaur/utils/huge"
 
 // ItemContainerMember 物品容器成员信息
-type ItemContainerMember[ItemID comparable] interface {
-	Item[ItemID]
+type ItemContainerMember[ItemID comparable, I Item[ItemID]] interface {
+	// GetID 获取物品ID
+	GetID() ItemID
+	// GetGUID 获取物品GUID
+	GetGUID() int64
 	// GetCount 获取物品数量
 	GetCount() *huge.Int
+	// GetItem 获取物品
+	GetItem() I
 }