diff --git a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/service/category/ProductCategoryServiceImpl.java b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/service/category/ProductCategoryServiceImpl.java
index f0d10b8b8..21dfb9dee 100644
--- a/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/service/category/ProductCategoryServiceImpl.java
+++ b/yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/service/category/ProductCategoryServiceImpl.java
@@ -77,7 +77,7 @@ public class ProductCategoryServiceImpl implements ProductCategoryService {
             throw exception(CATEGORY_PARENT_NOT_EXISTS);
         }
         // 父分类不能是二级分类
-        if (Objects.equals(id, ProductCategoryDO.PARENT_ID_NULL)) {
+        if (!Objects.equals(category.getParentId(), ProductCategoryDO.PARENT_ID_NULL)) {
             throw exception(CATEGORY_PARENT_NOT_FIRST_LEVEL);
         }
     }