diff --git a/src/main/java/com/zsc/edu/gateway/modules/system/dto/MenuDto.java b/src/main/java/com/zsc/edu/gateway/modules/system/dto/MenuDto.java
index e52b7e6..cd6916c 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/system/dto/MenuDto.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/system/dto/MenuDto.java
@@ -16,7 +16,7 @@ public class MenuDto {
     /**
      * 父菜单ID
      */
-    private Long pid;
+    private Long pid = null;
     /**
      * 菜单类型
      */
diff --git a/src/main/java/com/zsc/edu/gateway/modules/system/service/impl/MenuServiceImpl.java b/src/main/java/com/zsc/edu/gateway/modules/system/service/impl/MenuServiceImpl.java
index 245c998..6f4659a 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/system/service/impl/MenuServiceImpl.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/system/service/impl/MenuServiceImpl.java
@@ -48,6 +48,9 @@ public class MenuServiceImpl extends ServiceImpl<MenuRepository, Menu> implement
         if (baseMapper.exists(new LambdaQueryWrapper<Menu>().eq(Menu::getPermissions, dto.getPermissions()))) {
             throw new ConstraintException("该权限已存在!请检查输入表单是否出错!");
         }
+        if (baseMapper.selectOne(new LambdaQueryWrapper<Menu>().eq(Menu::getPid, dto.getPid())) == null && dto.getPid() != null) {
+            throw new ConstraintException("上级菜单不存在!请检查输入表单是否出错!");
+        }
         Menu menu = mapper.toEntity(dto);
         baseMapper.insert(menu);
         return menu;