diff --git a/controllers/auth.go b/controllers/auth.go
index 6bae47d4..4918f99b 100644
--- a/controllers/auth.go
+++ b/controllers/auth.go
@@ -28,6 +28,7 @@ import (
 	"github.com/casdoor/casdoor/object"
 	"github.com/casdoor/casdoor/proxy"
 	"github.com/casdoor/casdoor/util"
+	"github.com/google/uuid"
 )
 
 func codeToResponse(code *object.Code) *Response {
@@ -252,7 +253,7 @@ func (c *ApiController) Login() {
 			record := object.NewRecord(c.Ctx)
 			record.Organization = application.Organization
 			record.User = user.Name
-			util.SafeGoroutine(func() {object.AddRecord(record)})
+			util.SafeGoroutine(func() { object.AddRecord(record) })
 		}
 	} else if form.Provider != "" {
 		application := object.GetApplication(fmt.Sprintf("admin/%s", form.Application))
@@ -345,7 +346,7 @@ func (c *ApiController) Login() {
 				record := object.NewRecord(c.Ctx)
 				record.Organization = application.Organization
 				record.User = user.Name
-				util.SafeGoroutine(func() {object.AddRecord(record)})
+				util.SafeGoroutine(func() { object.AddRecord(record) })
 			} else if provider.Category == "OAuth" {
 				// Sign up via OAuth
 				if !application.EnableSignUp {
@@ -358,6 +359,19 @@ func (c *ApiController) Login() {
 					return
 				}
 
+				// Handle username conflicts
+				tmpUser := object.GetUser(fmt.Sprintf("%s/%s", application.Organization, userInfo.Username))
+				if tmpUser != nil {
+					uid, err := uuid.NewRandom()
+					if err != nil {
+						c.ResponseError(err.Error())
+						return
+					}
+
+					uidStr := strings.Split(uid.String(), "-")
+					userInfo.Username = fmt.Sprintf("%s_%s", userInfo.Username, uidStr[1])
+				}
+
 				properties := map[string]string{}
 				properties["no"] = strconv.Itoa(len(object.GetUsers(application.Organization)) + 2)
 				user = &object.User{
@@ -394,7 +408,7 @@ func (c *ApiController) Login() {
 				record := object.NewRecord(c.Ctx)
 				record.Organization = application.Organization
 				record.User = user.Name
-				util.SafeGoroutine(func() {object.AddRecord(record)})
+				util.SafeGoroutine(func() { object.AddRecord(record) })
 			} else if provider.Category == "SAML" {
 				resp = &Response{Status: "error", Msg: "The account does not exist"}
 			}
diff --git a/idp/wechat.go b/idp/wechat.go
index 3f6babea..727ad7cc 100644
--- a/idp/wechat.go
+++ b/idp/wechat.go
@@ -185,7 +185,7 @@ func (idp *WeChatIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, error)
 
 	userInfo := UserInfo{
 		Id:          id,
-		Username:    id,
+		Username:    wechatUserInfo.Nickname,
 		DisplayName: wechatUserInfo.Nickname,
 		AvatarUrl:   wechatUserInfo.Headimgurl,
 	}
diff --git a/routers/record.go b/routers/record.go
index 8bfe988f..f65b6720 100644
--- a/routers/record.go
+++ b/routers/record.go
@@ -65,5 +65,5 @@ func RecordMessage(ctx *context.Context) {
 		record.Organization, record.User = util.GetOwnerAndNameFromId(userId)
 	}
 
-	util.SafeGoroutine(func() {object.AddRecord(record)})
+	util.SafeGoroutine(func() { object.AddRecord(record) })
 }