diff --git a/product.go b/product.go
index 9342370..cf43237 100644
--- a/product.go
+++ b/product.go
@@ -24,8 +24,8 @@ const (
 type ProductsChangeStockType = int
 
 const (
-	ProductsChangeStockTypePaied ProductsChangeStockType = 10 // 已支付
-	ProductsChangeStockTypeSent  ProductsChangeStockType = 20 // 已发货
+	ProductsChangeStockTypePlaced ProductsChangeStockType = 10 // 下单时
+	ProductsChangeStockTypeSent   ProductsChangeStockType = 20 // 已发货
 )
 
 type ProductsChangeStock struct {