diff --git a/ruoyi-api/ruoyi-api-system/src/main/java/org/dromara/system/api/RemoteUserService.java b/ruoyi-api/ruoyi-api-system/src/main/java/org/dromara/system/api/RemoteUserService.java
index 723e462b..5fe237e1 100644
--- a/ruoyi-api/ruoyi-api-system/src/main/java/org/dromara/system/api/RemoteUserService.java
+++ b/ruoyi-api/ruoyi-api-system/src/main/java/org/dromara/system/api/RemoteUserService.java
@@ -57,14 +57,6 @@ public interface RemoteUserService {
      */
     XcxLoginUser getUserInfoByOpenid(String openid) throws UserException;
 
-    /**
-     * 校验用户名称是否唯一
-     *
-     * @param remoteUserBo 用户信息
-     * @return 结果
-     */
-    boolean checkUserNameUnique(RemoteUserBo remoteUserBo);
-
     /**
      * 注册用户信息
      *
diff --git a/ruoyi-auth/src/main/java/org/dromara/auth/service/SysLoginService.java b/ruoyi-auth/src/main/java/org/dromara/auth/service/SysLoginService.java
index 7e203e71..ccc5f590 100644
--- a/ruoyi-auth/src/main/java/org/dromara/auth/service/SysLoginService.java
+++ b/ruoyi-auth/src/main/java/org/dromara/auth/service/SysLoginService.java
@@ -136,10 +136,7 @@ public class SysLoginService {
         remoteUserBo.setNickName(username);
         remoteUserBo.setPassword(BCrypt.hashpw(password));
         remoteUserBo.setUserType(userType);
-        // 校验用户名是否唯一
-        if (!remoteUserService.checkUserNameUnique(remoteUserBo)) {
-            throw new UserException("user.register.save.error", username);
-        }
+
         boolean regFlag = remoteUserService.registerUserInfo(remoteUserBo);
         if (!regFlag) {
             throw new UserException("user.register.error");
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/dubbo/RemoteUserServiceImpl.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/dubbo/RemoteUserServiceImpl.java
index 412a45fc..2297a5d5 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/dubbo/RemoteUserServiceImpl.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/dubbo/RemoteUserServiceImpl.java
@@ -143,11 +143,6 @@ public class RemoteUserServiceImpl implements RemoteUserService {
         return loginUser;
     }
 
-    @Override
-    public boolean checkUserNameUnique(RemoteUserBo remoteUserBo) {
-        return userService.checkUserNameUnique(MapstructUtils.convert(remoteUserBo, SysUserBo.class));
-    }
-
     @Override
     public Boolean registerUserInfo(RemoteUserBo remoteUserBo) throws UserException, ServiceException {
         SysUserBo sysUserBo = MapstructUtils.convert(remoteUserBo, SysUserBo.class);
@@ -155,7 +150,11 @@ public class RemoteUserServiceImpl implements RemoteUserService {
         if (!("true".equals(configService.selectConfigByKey("sys.account.registerUser")))) {
             throw new ServiceException("当前系统没有开启注册功能");
         }
-        if (!userService.checkUserNameUnique(sysUserBo)) {
+        boolean exist = userMapper.exists(new LambdaQueryWrapper<SysUser>()
+            .eq(TenantHelper.isEnable(), SysUser::getTenantId, remoteUserBo.getTenantId())
+            .eq(SysUser::getUserName, sysUserBo.getUserName())
+            .ne(ObjectUtil.isNotNull(sysUserBo.getUserId()), SysUser::getUserId, sysUserBo.getUserId()));
+        if (exist) {
             throw new UserException("user.register.save.error", username);
         }
         return userService.registerUser(sysUserBo, remoteUserBo.getTenantId());