diff --git a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/dict/CategoryMapper.java b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/dict/CategoryMapper.java
index 18d7d29e..f0385c8c 100644
--- a/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/dict/CategoryMapper.java
+++ b/yudao-module-system/yudao-module-system-biz/src/main/java/cn/iocoder/yudao/module/system/dal/mysql/dict/CategoryMapper.java
@@ -22,10 +22,6 @@ public interface CategoryMapper extends BaseMapperX<CategoryDO> {
         return selectOne(CategoryDO::getPid, parentId, CategoryDO::getCode,code);
     }
 
-    default CategoryDO selectByParentId(String parentId) {
-        return selectOne(CategoryDO::getPid, parentId);
-    }
-
     default Long selectCountByParentId(String parentId) {
         return selectCount(CategoryDO::getPid, parentId);
     }