diff --git a/modules/items/api_useItem.go b/modules/items/api_useItem.go
index 978733ae7..968f3feba 100644
--- a/modules/items/api_useItem.go
+++ b/modules/items/api_useItem.go
@@ -101,7 +101,7 @@ func (this *apiComp) Useitem(session comm.IUserSession, req *pb.ItemsUseItemReq)
 			code = pb.ErrorCode_ConfigNoFound
 			return
 		}
-		sale := make([]*cfg.Gameatn, len(prop))
+		sale := make([]*cfg.Gameatn, 0, len(prop))
 		for _, v := range prop {
 			for _, v1 := range v.Prize {
 				sale = append(sale, &cfg.Gameatn{