diff --git a/platformapi/mtwmapi/retail.go b/platformapi/mtwmapi/retail.go
index 1955f481..69b0506b 100644
--- a/platformapi/mtwmapi/retail.go
+++ b/platformapi/mtwmapi/retail.go
@@ -136,6 +136,8 @@ type Param4UpdateCat struct {
 // 修改二级分类，originName为二级分类名，name为二级分类新名，secondaryName为空
 // https://developer.waimai.meituan.com/home/docDetail/71
 // https://developer.waimai.meituan.com/home/questionDetail/4669
+// 此接口并发访问，可能导致创建相同的分类，见如下问题回复
+// https://developer.waimai.meituan.com/home/myquestionDetail/6931
 func (a *API) RetailCatUpdate(poiCode, catName string, updateParams *Param4UpdateCat) (err error) {
 	if updateParams != nil {
 		if updateParams.CategoryCodeOrigin != "" {