diff --git a/src/server/game/player_mod.go b/src/server/game/player_mod.go
index 87d5b647..4cf86d85 100644
--- a/src/server/game/player_mod.go
+++ b/src/server/game/player_mod.go
@@ -41,9 +41,17 @@ import (
 	sevenLogin "server/game/mod/seven_login"
 	Var "server/game/mod/var"
 	"server/pkg/github.com/name5566/leaf/log"
+	"sync"
 	"time"
 )
 
+// buffer 对象池，复用 bytes.Buffer 减少内存分配
+var bufferPool = sync.Pool{
+	New: func() interface{} {
+		return bytes.NewBuffer(make([]byte, 0, 128*1024))
+	},
+}
+
 type PlayerData struct {
 	Name         string
 	IsHaveDataDb bool
@@ -262,17 +270,23 @@ func (p *PlayerMod) ClearData(player *Player) {
 }
 
 func (p *PlayerMod) BackUp(B *PlayerBackUp) {
-	// 预分配 buffer 容量，避免动态扩容，根据实际数据大小可调整
-	now := time.Now()
-	buf := bytes.NewBuffer(make([]byte, 0, 128*1024))
+	// 从对象池获取 buffer，复用以减少内存分配
+	buf := bufferPool.Get().(*bytes.Buffer)
+	buf.Reset() // 清空之前的数据
+
 	encode := gob.NewEncoder(buf)
 	err := encode.Encode(p.mod_list)
 	if err != nil {
 		log.Debug("Backup, playmod error %v", err)
+		bufferPool.Put(buf) // 即使出错也要归还
 		return
 	}
-	B.PlayMod = buf.Bytes()
-	log.Debug("backup player, cost time %v", time.Since(now))
+
+	// 复制数据，因为 buf 会被放回池中
+	B.PlayMod = append([]byte(nil), buf.Bytes()...)
+
+	// 归还到对象池供下次使用
+	bufferPool.Put(buf)
 }
 
 func (p *PlayerMod) Recover(B *PlayerBackUp) {