diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/request/WxPayUnifiedOrderV3Request.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/request/WxPayUnifiedOrderV3Request.java
index c0bf41782..98b46e115 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/request/WxPayUnifiedOrderV3Request.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/request/WxPayUnifiedOrderV3Request.java
@@ -80,7 +80,7 @@ public class WxPayUnifiedOrderV3Request implements Serializable {
   /**
    * <pre>
    * 字段名：交易结束时间
-   * 变量名：out_trade_no
+   * 变量名：time_expire
    * 是否必填：是
    * 类型：string[1,64]
    * 描述：