diff --git a/src/server/game/mod/emoji/emoji.go b/src/server/game/mod/emoji/emoji.go
index ef72caf6..5d28a0aa 100644
--- a/src/server/game/mod/emoji/emoji.go
+++ b/src/server/game/mod/emoji/emoji.go
@@ -79,7 +79,7 @@ func (e *EmojiMod) GetEmojiSet() map[int32]int32 {
 }
 
 func (e *EmojiMod) BackData() []*msg.EmojiInfo {
-	l := make([]*msg.EmojiInfo, 0)
+	l := make([]*msg.EmojiInfo, 0, len(e.List))
 	for k, v := range e.List {
 		l = append(l, &msg.EmojiInfo{
 			Id:      int32(k),
diff --git a/src/server/game/mod/face/Face.go b/src/server/game/mod/face/Face.go
index bddd33fc..28deb181 100644
--- a/src/server/game/mod/face/Face.go
+++ b/src/server/game/mod/face/Face.go
@@ -78,7 +78,7 @@ func (a *FaceMod) Unlock(Id, Time int) error {
 }
 
 func (f *FaceMod) BackData() []*msg.FaceInfo {
-	l := make([]*msg.FaceInfo, 0)
+	l := make([]*msg.FaceInfo, 0, len(f.List))
 	for k, v := range f.List {
 		l = append(l, &msg.FaceInfo{
 			Id:      int32(k),
diff --git a/src/server/game/mod/item/Item.go b/src/server/game/mod/item/Item.go
index 89fb1e2c..52ded44c 100644
--- a/src/server/game/mod/item/Item.go
+++ b/src/server/game/mod/item/Item.go
@@ -175,7 +175,7 @@ func Merge(Item1, Item2 []*Item) []*Item {
 	for _, v := range Item2 {
 		l[v.Id] += v.Num
 	}
-	res := make([]*Item, 0)
+	res := make([]*Item, 0, len(l))
 	for k, v := range l {
 		res = append(res, &Item{
 			Id:  k,
@@ -188,7 +188,7 @@ func MutilItem(i []*Item, num int) []*Item {
 	if i == nil {
 		return nil
 	}
-	res := make([]*Item, 0)
+	res := make([]*Item, 0, len(i))
 	for _, v := range i {
 		res = append(res, &Item{
 			Id:  v.Id,
@@ -202,7 +202,7 @@ func MutilItemFloat(i []*Item, num float64) []*Item {
 	if i == nil {
 		return nil
 	}
-	res := make([]*Item, 0)
+	res := make([]*Item, 0, len(i))
 	for _, v := range i {
 		res = append(res, &Item{
 			Id:  v.Id,