diff --git a/service-oa/src/main/java/com/atguigu/auth/mapper/SysRoleMapper.java b/service-oa/src/main/java/com/atguigu/auth/mapper/SysRoleMapper.java
index 7922b5f..f53bd9a 100644
--- a/service-oa/src/main/java/com/atguigu/auth/mapper/SysRoleMapper.java
+++ b/service-oa/src/main/java/com/atguigu/auth/mapper/SysRoleMapper.java
@@ -15,4 +15,12 @@ public interface SysRoleMapper extends BaseMapper<SysRole> {
      * @return 角色列表
      */
     List<SysRole> selectByUserId(Long userId);
+
+    /**
+     * 根据角色id获取角色权限
+     *
+     * @param roleId 角色Id
+     * @return 菜单列表Id
+     */
+    List<Long> selectByRoleId4MenuId(Long roleId);
 }
diff --git a/service-oa/src/main/java/com/atguigu/auth/service/impl/SysMenuServiceImpl.java b/service-oa/src/main/java/com/atguigu/auth/service/impl/SysMenuServiceImpl.java
index 68d7cef..f28a41d 100644
--- a/service-oa/src/main/java/com/atguigu/auth/service/impl/SysMenuServiceImpl.java
+++ b/service-oa/src/main/java/com/atguigu/auth/service/impl/SysMenuServiceImpl.java
@@ -1,7 +1,9 @@
 package com.atguigu.auth.service.impl;
 
 import com.atguigu.auth.mapper.SysMenuMapper;
+import com.atguigu.auth.mapper.SysRoleMapper;
 import com.atguigu.auth.service.SysMenuService;
+import com.atguigu.auth.service.SysRoleMenuService;
 import com.atguigu.common.utlis.MenuHelper;
 import com.atguigu.constant.MessageConstant;
 import com.atguigu.exception.BunnyException;
@@ -9,6 +11,7 @@ import com.atguigu.model.system.SysMenu;
 import com.atguigu.vo.system.AssginMenuVo;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
@@ -23,6 +26,10 @@ import java.util.List;
  */
 @Service
 public class SysMenuServiceImpl extends ServiceImpl<SysMenuMapper, SysMenu> implements SysMenuService {
+    @Autowired
+    private SysRoleMenuService sysRoleMenuService;
+    @Autowired
+    private SysRoleMapper sysRoleMapper;
 
     /**
      * 获取菜单
@@ -63,7 +70,19 @@ public class SysMenuServiceImpl extends ServiceImpl<SysMenuMapper, SysMenu> impl
      */
     @Override
     public List<SysMenu> findSysMenuByRoleId(Long roleId) {
-        return null;
+        // 查询所有权限列表
+        LambdaQueryWrapper<SysMenu> wrapper = new LambdaQueryWrapper<>();
+        wrapper.eq(SysMenu::getStatus, 1);
+        List<SysMenu> allSysMenuList = list(wrapper);
+
+        // 根据角色id获取角色权限
+        List<Long> menuIdList = sysRoleMapper.selectByRoleId4MenuId(roleId);
+
+        allSysMenuList.forEach(permission -> {
+            permission.setSelect(menuIdList.contains(permission.getId()));
+        });
+
+        return MenuHelper.buildTree(allSysMenuList);
     }
 
     /**
diff --git a/service-oa/src/main/resources/mapper/SysRoleMapper.xml b/service-oa/src/main/resources/mapper/SysRoleMapper.xml
index 1e21dca..57df5b0 100644
--- a/service-oa/src/main/resources/mapper/SysRoleMapper.xml
+++ b/service-oa/src/main/resources/mapper/SysRoleMapper.xml
@@ -7,4 +7,11 @@
         FROM sys_role
         WHERE id IN (SELECT role_id FROM sys_user_role WHERE user_id = #{user_id})
     </select>
+
+    <!-- 根据角色id获取角色权限 -->
+    <select id="selectByRoleId4MenuId" resultType="java.lang.Long">
+        SELECT menu_id
+        FROM sys_role_menu
+        WHERE role_id = #{role_id}
+    </select>
 </mapper>