diff --git a/business/jxstore/cms/user2.go b/business/jxstore/cms/user2.go
index 5f52c047e..5b27bc053 100644
--- a/business/jxstore/cms/user2.go
+++ b/business/jxstore/cms/user2.go
@@ -58,6 +58,7 @@ func RegisterUser(user *model.User, mobileVerifyCode string, inAuthInfo *auth2.A
 			}
 		} else if dao.IsDuplicateError(err) {
 			errCode = model.ErrCodeUserAlreadyExist
+			err = auth2.ErrUserID2AlreadyExist
 		}
 	}
 	if err == nil {