diff --git a/erp/purchase/product.go b/erp/purchase/product.go
index ad216fb..0570b22 100644
--- a/erp/purchase/product.go
+++ b/erp/purchase/product.go
@@ -71,8 +71,18 @@ func (p *product) Edit(ctx context.Context, args ArgsProductEdit) (err error) {
 }
 
 type ArgsProductChangeFactory struct {
-	FactoryId          int64   // 工厂id
-	PurchaseProductIds []int64 // 采购商品id
+	PurchaseId int64                             // 采购合同id
+	FactoryId  int64                             // 工厂id
+	Products   []ProductChangeFactoryProductItem // 采购商品id
+}
+
+type ProductChangeFactoryProductItem struct {
+	PurchaseProductId int64       // 采购产品id
+	Batches           []BatchItem // 产品批次
+}
+type BatchItem struct {
+	BatchNo       int64 // 批次号
+	PurchaseCount int64 // 采购数量
 }
 
 // ChangeFactory @TITLE 更换工厂