diff --git a/bot.go b/bot.go
index dc60fe4..d5b890b 100644
--- a/bot.go
+++ b/bot.go
@@ -3,6 +3,7 @@ package openwechat
 import (
     "errors"
     "fmt"
+    "log"
 )
 
 type Bot struct {
@@ -91,7 +92,6 @@ func (b *Bot) login(data []byte) error {
     if err != nil {
         return err
     }
-
     // 将LoginInfo存到storage里面
     b.storage.LoginInfo = info
 
@@ -158,6 +158,7 @@ func (b *Bot) stopAsyncCALL(err error) {
     b.exit <- true
     b.err = err
     b.self = nil
+    log.Printf("exit with : %s", err.Error())
 }
 
 // 获取新的消息
diff --git a/caller.go b/caller.go
index fd1c183..cd29d14 100644
--- a/caller.go
+++ b/caller.go
@@ -80,6 +80,9 @@ func (c *Caller) GetLoginInfo(body []byte) (*LoginInfo, error) {
     if err := resp.ScanXML(&loginInfo); err != nil {
         return nil, err
     }
+    if !loginInfo.Ok() {
+        return nil, loginInfo
+    }
     return &loginInfo, nil
 }
 
diff --git a/items.go b/items.go
index 83fb99b..85bd7ad 100644
--- a/items.go
+++ b/items.go
@@ -17,6 +17,14 @@ type LoginInfo struct {
     PassTicket  string `xml:"pass_ticket"`
 }
 
+func (l LoginInfo) Ok() bool {
+    return l.Ret == 0
+}
+
+func (l LoginInfo) Error() string {
+    return l.Message
+}
+
 // 初始的请求信息
 // 几乎所有的请求都要携带该参数
 type BaseRequest struct {
diff --git a/message.go b/message.go
index e8d2f40..2ac2542 100644
--- a/message.go
+++ b/message.go
@@ -210,6 +210,11 @@ func (m *Message) IsSysNotice() bool {
     return m.MsgType == 9999
 }
 
+// 判断是否为操作通知消息
+func (m *Message) StatusNotify() bool {
+    return m.MsgType == 51
+}
+
 // 判断消息是否为文件类型的消息
 func (m *Message) HasFile() bool {
     return m.IsPicture() || m.IsVoice() || m.IsVideo() || m.IsMedia()