diff --git a/bot.go b/bot.go
index bd55484..18877a5 100644
--- a/bot.go
+++ b/bot.go
@@ -71,23 +71,17 @@ func (b *Bot) HotLogin(storage HotReloadStorage, retry ...bool) error {
 	if _, err := buffer.ReadFrom(storage); err != nil {
 		return b.Login()
 	}
+	defer b.HotReloadStorage.Close()
 
 	var item HotReloadStorageItem
+
 	if err = json.NewDecoder(&buffer).Decode(&item); err != nil {
 		return err
 	}
 
-	cookies := item.Cookies
-	for u, ck := range cookies {
-		path, err := url.Parse(u)
-		if err != nil {
-			return err
-		}
-		b.Caller.Client.Jar.SetCookies(path, ck)
+	if err = b.hotLoginInit(item); err != nil {
+		return err
 	}
-	b.storage.LoginInfo = item.LoginInfo
-	b.storage.Request = item.BaseRequest
-	b.Caller.Client.domain = item.WechatDomain
 
 	// 如果webInit出错,则说明可能身份信息已经失效
 	// 如果retry为True的话,则进行正常登陆
@@ -100,21 +94,20 @@ func (b *Bot) HotLogin(storage HotReloadStorage, retry ...bool) error {
 }
 
 // 热登陆初始化
-//func (b *Bot) hotLoginInit() error {
-//	item := b.hotReloadStorage.GetHotReloadStorageItem()
-//	cookies := item.Cookies
-//	for u, ck := range cookies {
-//		path, err := url.Parse(u)
-//		if err != nil {
-//			return err
-//		}
-//		b.Caller.Client.Jar.SetCookies(path, ck)
-//	}
-//	b.storage.LoginInfo = item.LoginInfo
-//	b.storage.Request = item.BaseRequest
-//	b.Caller.Client.domain = item.WechatDomain
-//	return nil
-//}
+func (b *Bot) hotLoginInit(item HotReloadStorageItem) error {
+	cookies := item.Cookies
+	for u, ck := range cookies {
+		path, err := url.Parse(u)
+		if err != nil {
+			return err
+		}
+		b.Caller.Client.Jar.SetCookies(path, ck)
+	}
+	b.storage.LoginInfo = item.LoginInfo
+	b.storage.Request = item.BaseRequest
+	b.Caller.Client.domain = item.WechatDomain
+	return nil
+}
 
 // Login 用户登录
 // 该方法会一直阻塞，直到用户扫码登录，或者二维码过期
@@ -328,9 +321,10 @@ func (b *Bot) DumpHotReloadStorage() error {
 	if err != nil {
 		return err
 	}
-	_, err = b.HotReloadStorage.Write(data)
-	return err
-
+	if _, err = b.HotReloadStorage.Write(data); err != nil {
+		return err
+	}
+	return b.HotReloadStorage.Close()
 }
 
 // OnLogin is a setter for LoginCallBack
diff --git a/stroage.go b/stroage.go
index a801690..e59e534 100644
--- a/stroage.go
+++ b/stroage.go
@@ -21,7 +21,7 @@ type HotReloadStorageItem struct {
 }
 
 // HotReloadStorage 热登陆存储接口
-type HotReloadStorage io.ReadWriter
+type HotReloadStorage io.ReadWriteCloser
 
 // JsonFileHotReloadStorage 实现HotReloadStorage接口
 // 默认以json文件的形式存储
@@ -37,22 +37,26 @@ func (j *JsonFileHotReloadStorage) Read(p []byte) (n int, err error) {
 			return 0, err
 		}
 	}
-	n, err = j.file.Read(p)
-	if err == io.EOF {
-		j.file.Close()
-	}
-	return n, err
+	return j.file.Read(p)
 }
 
 func (j *JsonFileHotReloadStorage) Write(p []byte) (n int, err error) {
-	file, err := os.Create(j.FileName)
+	j.file, err = os.Create(j.FileName)
 	if err != nil {
 		return 0, err
 	}
-	defer file.Close()
-	return file.Write(p)
+	return j.file.Write(p)
 }
 
-func NewJsonFileHotReloadStorage(filename string) *JsonFileHotReloadStorage {
+func (j *JsonFileHotReloadStorage) Close() error {
+	if j.file != nil {
+		return j.file.Close()
+	}
+	return nil
+}
+
+func NewJsonFileHotReloadStorage(filename string) HotReloadStorage {
 	return &JsonFileHotReloadStorage{FileName: filename}
 }
+
+var _ HotReloadStorage = &JsonFileHotReloadStorage{}