diff --git a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/controller/SysUserController.java b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/controller/SysUserController.java
index b7b400de4..11920bdd2 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/controller/SysUserController.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/controller/SysUserController.java
@@ -143,7 +143,7 @@ public class SysUserController extends BaseController
         {
             return R.fail("当前系统没有开启注册功能！");
         }
-        if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(username)))
+        if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(sysUser)))
         {
             return R.fail("保存用户'" + username + "'失败，注册账号已存在");
         }
@@ -200,7 +200,7 @@ public class SysUserController extends BaseController
     @PostMapping
     public AjaxResult add(@Validated @RequestBody SysUser user)
     {
-        if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(user.getUserName())))
+        if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(user)))
         {
             return AjaxResult.error("新增用户'" + user.getUserName() + "'失败，登录账号已存在");
         }
@@ -229,7 +229,11 @@ public class SysUserController extends BaseController
     {
         userService.checkUserAllowed(user);
         userService.checkUserDataScope(user.getUserId());
-        if (StringUtils.isNotEmpty(user.getPhonenumber())
+        if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(user)))
+        {
+            return AjaxResult.error("修改用户'" + user.getUserName() + "'失败，登录账号已存在");
+        }
+        else if (StringUtils.isNotEmpty(user.getPhonenumber())
                 && UserConstants.NOT_UNIQUE.equals(userService.checkPhoneUnique(user)))
         {
             return AjaxResult.error("修改用户'" + user.getUserName() + "'失败，手机号码已存在");
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysUserMapper.java b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysUserMapper.java
index 7b8c4c6b3..9535ab8cc 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysUserMapper.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/mapper/SysUserMapper.java
@@ -107,7 +107,7 @@ public interface SysUserMapper
      * @param userName 用户名称
      * @return 结果
      */
-    public int checkUserNameUnique(String userName);
+    public SysUser checkUserNameUnique(String userName);
 
     /**
      * 校验手机号码是否唯一
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/ISysUserService.java b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/ISysUserService.java
index 1fc220ade..a50fd6407 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/ISysUserService.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/ISysUserService.java
@@ -69,10 +69,10 @@ public interface ISysUserService
     /**
      * 校验用户名称是否唯一
      * 
-     * @param userName 用户名称
+     * @param user 用户信息
      * @return 结果
      */
-    public String checkUserNameUnique(String userName);
+    public String checkUserNameUnique(SysUser user);
 
     /**
      * 校验手机号码是否唯一
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
index 8f71552be..4a2aff839 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
@@ -161,14 +161,15 @@ public class SysUserServiceImpl implements ISysUserService
     /**
      * 校验用户名称是否唯一
      * 
-     * @param userName 用户名称
+     * @param user 用户信息
      * @return 结果
      */
     @Override
-    public String checkUserNameUnique(String userName)
+    public String checkUserNameUnique(SysUser user)
     {
-        int count = userMapper.checkUserNameUnique(userName);
-        if (count > 0)
+        Long userId = StringUtils.isNull(user.getUserId()) ? -1L : user.getUserId();
+        SysUser info = userMapper.checkUserNameUnique(user.getUserName());
+        if (StringUtils.isNotNull(info) && info.getUserId().longValue() != userId.longValue())
         {
             return UserConstants.NOT_UNIQUE;
         }
diff --git a/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml b/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml
index 9f1839c10..3c1c6c547 100644
--- a/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml
+++ b/ruoyi-modules/ruoyi-system/src/main/resources/mapper/system/SysUserMapper.xml
@@ -130,8 +130,8 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 		where u.user_id = #{userId}
 	</select>
 	
-	<select id="checkUserNameUnique" parameterType="String" resultType="int">
-		select count(1) from sys_user where user_name = #{userName} and del_flag = '0' limit 1
+	<select id="checkUserNameUnique" parameterType="String" resultMap="SysUserResult">
+		select user_id, user_name from sys_user where user_name = #{userName} and del_flag = '0' limit 1
 	</select>
 	
 	<select id="checkPhoneUnique" parameterType="String" resultMap="SysUserResult">