diff --git a/modules/items/api_useItem.go b/modules/items/api_useItem.go
index 1742b7619..978733ae7 100644
--- a/modules/items/api_useItem.go
+++ b/modules/items/api_useItem.go
@@ -127,10 +127,22 @@ func (this *apiComp) Useitem(session comm.IUserSession, req *pb.ItemsUseItemReq)
 			code = pb.ErrorCode_ItemsNoEnough
 			return
 		}
+		sale := make([]*cfg.Gameatn, 0, len(itemcf.SynthetizeDeplete))
+		for _, v := range itemcf.SynthetizeDeplete {
+			sale = append(sale, &cfg.Gameatn{
+				A: v.A,
+				T: v.T,
+				N: v.N * int32(req.Amount),
+			})
+		}
+		if code = this.module.ConsumeRes(session, itemcf.SynthetizeDeplete, true); code != pb.ErrorCode_Success {
+			return
+		}
+
 		if code = this.module.AddItemforGrid(&comm.ModuleCallSource{}, session, req.GridId, -1*itemcf.SynthetizeNum*int32(req.Amount), true); code != pb.ErrorCode_Success {
 			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{