diff --git a/product.go b/product.go
index 1fab3f9..8991f73 100644
--- a/product.go
+++ b/product.go
@@ -13,7 +13,7 @@ const (
 	StockStateDecrease StockState = "reduce_inventory"   //减少库存
 )
 
-type ProductsChange struct {
+type ProductsChangeStock struct {
 	OrderId  uint       `json:"order_id"`
 	State    StockState `json:"state"`
 	SkuItems []*SkuItem