diff --git a/base_response.go b/base_response.go
index def2db3..3dfcb45 100644
--- a/base_response.go
+++ b/base_response.go
@@ -1,7 +1,5 @@
 package openwechat
 
-import "errors"
-
 type Ret int
 
 const (
@@ -28,5 +26,5 @@ func (b BaseResponse) Err() error {
 	if b.Ok() {
 		return nil
 	}
-	return errors.New(b.Ret.String())
+	return b.Ret
 }
diff --git a/bot.go b/bot.go
index 119ae94..f4d95af 100644
--- a/bot.go
+++ b/bot.go
@@ -73,31 +73,39 @@ func (b *Bot) GetCurrentUser() (*Self, error) {
 //	Storage := NewJsonFileHotReloadStorage("Storage.json")
 //	err := bot.HotLogin(Storage, true)
 //	fmt.Println(err)
-func (b *Bot) HotLogin(storage HotReloadStorage, retry ...bool) error {
-	b.hotReloadStorage = storage
-
-	var err error
-
-	// 如果load出错了,就执行正常登陆逻辑
-	// 第一次没有数据load都会出错的
-	item, err := NewHotReloadStorageItem(storage)
-
-	if err != nil {
+func (b *Bot) HotLogin(storage HotReloadStorage, retries ...bool) error {
+	err := b.hotLogin(storage)
+	// 判断是否为需要重新登录
+	if errors.Is(err, ErrInvalidStorage) {
 		return b.Login()
 	}
-
-	if err = b.hotLoginInit(item); err != nil {
-		return err
-	}
-
-	// 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
-	if err = b.WebInit(); err != nil && (len(retry) > 0 && retry[0]) {
-		err = b.Login()
+	if err != nil {
+		if len(retries) > 0 && retries[0] {
+			retErr, ok := err.(Ret)
+			if !ok {
+				return err
+			}
+			if retErr == cookieInvalid {
+				return b.Login()
+			}
+		}
 	}
 	return err
 }
 
+func (b *Bot) hotLogin(storage HotReloadStorage) error {
+	b.hotReloadStorage = storage
+	var item HotReloadStorageItem
+	err := json.NewDecoder(storage).Decode(&item)
+	if err != nil {
+		return err
+	}
+	if err = b.hotLoginInit(&item); err != nil {
+		return err
+	}
+	return b.WebInit()
+}
+
 // 热登陆初始化
 func (b *Bot) hotLoginInit(item *HotReloadStorageItem) error {
 	cookies := item.Cookies
diff --git a/errors.go b/errors.go
index 4176404..1fbd54d 100644
--- a/errors.go
+++ b/errors.go
@@ -4,8 +4,6 @@ import (
 	"errors"
 )
 
-var NetworkErr = errors.New("wechat network error")
-
 func IsNetworkError(err error) bool {
 	return errors.Is(err, NetworkErr)
 }
@@ -19,5 +17,18 @@ func IgnoreNetworkError(errHandler func(err error)) func(error) {
 	}
 }
 
-// ErrForbidden 禁止当前账号登录
-var ErrForbidden = errors.New("login forbidden")
+var (
+	// ErrForbidden 禁止当前账号登录
+	ErrForbidden = errors.New("login forbidden")
+
+	// ErrInvalidStorage define invalid storage error
+	ErrInvalidStorage = errors.New("invalid storage")
+
+	// NetworkErr define wechat network error
+	NetworkErr = errors.New("wechat network error")
+)
+
+// Error impl error interface
+func (r Ret) Error() string {
+	return r.String()
+}
diff --git a/stroage.go b/stroage.go
index e641988..399c45a 100644
--- a/stroage.go
+++ b/stroage.go
@@ -1,8 +1,6 @@
 package openwechat
 
 import (
-	"encoding/json"
-	"errors"
 	"io"
 	"net/http"
 	"os"
@@ -26,16 +24,19 @@ type HotReloadStorageItem struct {
 // HotReloadStorage 热登陆存储接口
 type HotReloadStorage io.ReadWriter
 
-// JsonFileHotReloadStorage 实现HotReloadStorage接口
+// jsonFileHotReloadStorage 实现HotReloadStorage接口
 // 默认以json文件的形式存储
-type JsonFileHotReloadStorage struct {
-	FileName string
+type jsonFileHotReloadStorage struct {
+	filename string
 	file     *os.File
 }
 
-func (j *JsonFileHotReloadStorage) Read(p []byte) (n int, err error) {
+func (j *jsonFileHotReloadStorage) Read(p []byte) (n int, err error) {
 	if j.file == nil {
-		j.file, err = os.Open(j.FileName)
+		j.file, err = os.Open(j.filename)
+		if os.IsNotExist(err) {
+			return 0, ErrInvalidStorage
+		}
 		if err != nil {
 			return 0, err
 		}
@@ -43,9 +44,9 @@ func (j *JsonFileHotReloadStorage) Read(p []byte) (n int, err error) {
 	return j.file.Read(p)
 }
 
-func (j *JsonFileHotReloadStorage) Write(p []byte) (n int, err error) {
+func (j *jsonFileHotReloadStorage) Write(p []byte) (n int, err error) {
 	if j.file == nil {
-		j.file, err = os.Create(j.FileName)
+		j.file, err = os.Create(j.filename)
 		if err != nil {
 			return 0, err
 		}
@@ -53,21 +54,16 @@ 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 nil
+	}
+	return j.file.Close()
+}
+
 // NewJsonFileHotReloadStorage 创建JsonFileHotReloadStorage
-func NewJsonFileHotReloadStorage(filename string) HotReloadStorage {
-	return &JsonFileHotReloadStorage{FileName: filename}
+func NewJsonFileHotReloadStorage(filename string) io.ReadWriteCloser {
+	return &jsonFileHotReloadStorage{filename: filename}
 }
 
-var _ HotReloadStorage = (*JsonFileHotReloadStorage)(nil)
-
-func NewHotReloadStorageItem(storage HotReloadStorage) (*HotReloadStorageItem, error) {
-	if storage == nil {
-		return nil, errors.New("storage can't be nil")
-	}
-	var item HotReloadStorageItem
-
-	if err := json.NewDecoder(storage).Decode(&item); err != nil {
-		return nil, err
-	}
-	return &item, nil
-}
+var _ HotReloadStorage = (*jsonFileHotReloadStorage)(nil)