diff --git a/dating-agency-mall-server/src/main/java/com/qniao/dam/application/service/paymentchannelorder/processor/wechat/WeChatPayProcessor.java b/dating-agency-mall-server/src/main/java/com/qniao/dam/application/service/paymentchannelorder/processor/wechat/WeChatPayProcessor.java
index c7fad32..c80224a 100644
--- a/dating-agency-mall-server/src/main/java/com/qniao/dam/application/service/paymentchannelorder/processor/wechat/WeChatPayProcessor.java
+++ b/dating-agency-mall-server/src/main/java/com/qniao/dam/application/service/paymentchannelorder/processor/wechat/WeChatPayProcessor.java
@@ -89,7 +89,7 @@ public class WeChatPayProcessor extends IChannelPayService {
             long timestamp = System.currentTimeMillis() / 1000;
             String sign;
             try {
-                sign = wxPayV3Util.sign(sessionVo.getPlatformAppId(), timestamp, nonceStr, prepayId);
+                sign = wxPayV3Util.sign(sessionVo.getPlatformAppId(), timestamp, nonceStr, "prepay_id=" + prepayId);
             } catch (Exception e) {
                 log.error(" sign fail AppV3PayStrategyImpl {}", e.getMessage(), e);
                 throw new BizException("生成签名错误：" + e.getMessage());