diff --git a/bot.go b/bot.go
index 9e24a58..38a3ab0 100644
--- a/bot.go
+++ b/bot.go
@@ -75,8 +75,6 @@ func (b *Bot) HotLogin(storage HotReloadStorage, retry ...bool) error {
 		return b.Login()
 	}
 
-	defer storage.Close()
-
 	if err = b.hotLoginInit(*item); err != nil {
 		return err
 	}
@@ -340,14 +338,7 @@ func (b *Bot) DumpHotReloadStorage() error {
 		WechatDomain: b.Caller.Client.Domain,
 	}
 
-	data, err := json.Marshal(item)
-	if err != nil {
-		return err
-	}
-	if _, err = b.HotReloadStorage.Write(data); err != nil {
-		return err
-	}
-	return b.HotReloadStorage.Close()
+	return json.NewEncoder(b.HotReloadStorage).Encode(item)
 }
 
 // OnLogin is a setter for LoginCallBack
diff --git a/stroage.go b/stroage.go
index a3e30b0..9e04255 100644
--- a/stroage.go
+++ b/stroage.go
@@ -23,7 +23,7 @@ type HotReloadStorageItem struct {
 }
 
 // HotReloadStorage 热登陆存储接口
-type HotReloadStorage io.ReadWriteCloser
+type HotReloadStorage io.ReadWriter
 
 // JsonFileHotReloadStorage 实现HotReloadStorage接口
 // 默认以json文件的形式存储
@@ -51,13 +51,6 @@ func (j *JsonFileHotReloadStorage) Write(p []byte) (n int, err error) {
 	return j.file.Write(p)
 }
 
-func (j *JsonFileHotReloadStorage) Close() error {
-	if j.file != nil {
-		return j.file.Close()
-	}
-	return nil
-}
-
 // NewJsonFileHotReloadStorage 创建JsonFileHotReloadStorage
 // Deprecated
 // use os.File instead