diff --git a/src/main/java/com/chint/application/system/UserController.java b/src/main/java/com/chint/application/system/UserController.java
index 97698a4c..e405e7fa 100644
--- a/src/main/java/com/chint/application/system/UserController.java
+++ b/src/main/java/com/chint/application/system/UserController.java
@@ -116,6 +116,14 @@ public class UserController {
     @ApiOperation("根据用户ID添加角色权限")
     @PostMapping("/add/role")
     public Result<String> addRoleUser(@RequestBody RoleOrgParam roleOrgParam) {
+        //查询已有权限
+        List<RoleUser> exist=roleUserRepository.findByUserId(roleOrgParam.getUserId());
+        List<Long> roleIdList=roleOrgParam.getRoleIdList();
+        roleIdList.removeAll(exist.stream().map(RoleUser::getRoleId).toList());
+        if (roleIdList.isEmpty()) {
+            return Result.Success();
+        }
+        roleOrgParam.setRoleIdList(roleIdList);
         roleOrgParam.getRoleIdList().stream()
                 .map(it -> RoleUser.of(roleOrgParam.getUserId(), it))
                 .toList()