diff --git a/business/partner/purchase/mtwm/order_comment.go b/business/partner/purchase/mtwm/order_comment.go
index d0b2032a5..c82c0f0cf 100644
--- a/business/partner/purchase/mtwm/order_comment.go
+++ b/business/partner/purchase/mtwm/order_comment.go
@@ -90,7 +90,7 @@ func (c *PurchaseHandler) RefreshComment(fromTime, toTime time.Time) (err error)
 					}
 
 					if len(mtwmComment.CommentOrderDetail) > 0 {
-						foodNameList := make([]string, len(mtwmComment.CommentOrderDetail))
+						foodNameList := make([]string, 0, len(mtwmComment.CommentOrderDetail))
 						for _, fn := range mtwmComment.CommentOrderDetail {
 							if len(fn.FoodName)-strings.LastIndex(fn.FoodName, "）") > 3 {
 								foodNameList = append(foodNameList, fn.FoodName)