diff --git a/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/bean/order/MainProductInfo.java b/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/bean/order/MainProductInfo.java
index bb13c0b0b..6e47393c6 100644
--- a/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/bean/order/MainProductInfo.java
+++ b/weixin-java-channel/src/main/java/me/chanjar/weixin/channel/bean/order/MainProductInfo.java
@@ -31,7 +31,7 @@ public class MainProductInfo implements Serializable {
    * 商品id
    */
   @JsonProperty("product_id")
-  private Integer productId;
+  private String productId;
 
   /**
    * 主品sku_id