diff --git a/business/auth2/authprovider/weixin/weixin_mini.go b/business/auth2/authprovider/weixin/weixin_mini.go
index e9bb9825a..bd95fb882 100644
--- a/business/auth2/authprovider/weixin/weixin_mini.go
+++ b/business/auth2/authprovider/weixin/weixin_mini.go
@@ -1,7 +1,6 @@
 package weixin
 
 import (
-	"encoding/base64"
 	"errors"
 	"strings"
 
@@ -55,7 +54,7 @@ func (a *MiniAuther) DecryptData(authInfo *auth2.AuthInfo, encryptedData, iv str
 	if err != nil {
 		return "", err
 	}
-	return base64.StdEncoding.EncodeToString(decryptedData), nil
+	return string(decryptedData), nil
 }
 
 func (a *MiniAuther) GetUserType() (userType int8) {
diff --git a/controllers/auth2.go b/controllers/auth2.go
index 92e207fe5..da3e17101 100644
--- a/controllers/auth2.go
+++ b/controllers/auth2.go
@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"strings"
 
+	"git.rosy.net.cn/baseapi/platformapi/weixinapi"
 	"git.rosy.net.cn/baseapi/utils"
 	"git.rosy.net.cn/jx-callback/business/auth2"
 	"git.rosy.net.cn/jx-callback/business/auth2/authprovider/dingding"
@@ -13,9 +14,9 @@ import (
 	"git.rosy.net.cn/jx-callback/business/auth2/authprovider/password"
 	"git.rosy.net.cn/jx-callback/business/auth2/authprovider/weixin"
 	"git.rosy.net.cn/jx-callback/business/model"
+	"git.rosy.net.cn/jx-callback/business/model/dao"
 	"git.rosy.net.cn/jx-callback/globals"
 	"github.com/astaxie/beego"
-	"git.rosy.net.cn/jx-callback/business/model/dao"
 )
 
 func GetComposedCode(c *beego.Controller, code string) (composedCode string) {
@@ -309,10 +310,14 @@ func (c *Auth2Controller) MiniDecryptData() {
 	c.callMiniDecryptData(func(params *tAuth2MiniDecryptDataParams) (retVal interface{}, errCode string, err error) {
 		authInfo, err := params.Ctx.GetV2AuthInfo()
 		if err == nil {
-			if retVal, err = weixin.AutherObjMini.DecryptData(authInfo, params.Data, params.Iv); err == nil {
-				if user:= params.Ctx.GetFullUser(); user != nil {
-					user.Avatar = "avatar"
-					dao.UpdateEntity(dao.GetDB(), user, "Avatar")
+			decryptedDataBase64, err2 := weixin.AutherObjMini.DecryptData(authInfo, params.Data, params.Iv)
+			if err = err2; err == nil {
+				var userInfo *weixinapi.MiniUserInfo
+				if err = utils.UnmarshalUseNumber([]byte(decryptedDataBase64), &userInfo); err == nil {
+					if user := params.Ctx.GetFullUser(); user != nil {
+						user.Avatar = userInfo.AvatarURL
+						dao.UpdateEntity(dao.GetDB(), user, "Avatar")
+					}
 				}
 			}
 		}