diff --git a/buyer-api/src/main/java/cn/lili/controller/passport/MemberBuyerController.java b/buyer-api/src/main/java/cn/lili/controller/passport/MemberBuyerController.java
index 2077c7af4..9b24c1748 100644
--- a/buyer-api/src/main/java/cn/lili/controller/passport/MemberBuyerController.java
+++ b/buyer-api/src/main/java/cn/lili/controller/passport/MemberBuyerController.java
@@ -167,9 +167,13 @@ public class MemberBuyerController {
                                             @RequestHeader String uuid) {
         if (smsUtil.verifyCode(mobile, VerificationEnums.BIND_MOBILE, uuid, code)) {
             Member member = memberService.findByUsername(username);
+            Member memberByMobile = memberService.findByMobile(mobile);
             if (member == null) {
                 throw new ServiceException(ResultCode.USER_NOT_EXIST);
             }
+            if(memberByMobile != null){
+                throw new ServiceException(ResultCode.USER_MOBILE_REPEATABLE_ERROR);
+            }
             return ResultUtil.data(memberService.changeMobile(member.getId(), mobile));
         } else {
             throw new ServiceException(ResultCode.VERIFICATION_SMS_CHECKED_ERROR);
diff --git a/framework/src/main/java/cn/lili/common/enums/ResultCode.java b/framework/src/main/java/cn/lili/common/enums/ResultCode.java
index 92cb4cff9..94a4888e4 100644
--- a/framework/src/main/java/cn/lili/common/enums/ResultCode.java
+++ b/framework/src/main/java/cn/lili/common/enums/ResultCode.java
@@ -152,6 +152,7 @@ public enum ResultCode {
     CLERK_DISABLED_ERROR(20031, "店员已禁用"),
     CLERK_CURRENT_SUPPER(20032, "无法删除当前登录店员"),
     CANT_EDIT_CLERK_SHOPKEEPER(20033, "无法在店员管理编辑店员信息"),
+    USER_MOBILE_REPEATABLE_ERROR(20034, "该手机号已存在"),
     /**
      * 权限
      */