diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/cai/app/PayController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/cai/app/PayController.java
index 21798430..fbc6173e 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/cai/app/PayController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/cai/app/PayController.java
@@ -75,7 +75,7 @@ public class PayController {
                 .notify_url(payConfig.getNotifyUrl()+NOTIFY_WX_URL)
                 .trade_type(TradeType.APP.getTradeType())
                 .build()
-                .createSign(payConfig.getWxKey(), SignType.HMACSHA256);
+                .createSign(payConfig.getWxKey(), SignType.MD5);
         String xmlResult = WxPayApi.pushOrder(false, params);
         log.info(xmlResult);
         Map<String, String> result = WxPayKit.xmlToMap(xmlResult);
@@ -92,8 +92,8 @@ public class PayController {
         }
         // 以下字段在 return_code 和 result_code 都为 SUCCESS 的时候有返回
         String prepayId = result.get("prepay_id");
-        Map<String, String> packageParams = WxPayKit.appPrepayIdCreateSign(payConfig.getAppid(), payConfig.getWxMcid(), prepayId,
-                payConfig.getWxKey(), SignType.HMACSHA256);
+        Map<String, String> packageParams = WxPayKit.appPrepayIdCreateSign(dto.getWxAppId(), payConfig.getWxMcid(), prepayId,
+                payConfig.getWxKey(), SignType.MD5);
         String jsonStr = JSON.toJSONString(packageParams);
         log.info("返回apk的参数:" + jsonStr);
         PayReturnResp resp = new PayReturnResp();
@@ -149,7 +149,7 @@ public class PayController {
         }
         // 注意重复通知的情况，同一订单号可能收到多次通知，请注意一定先判断订单状态
         // 注意此处签名方式需与统一下单的签名类型一致
-        if (WxPayKit.verifyNotify(params, payConfig.getWxKey(), SignType.HMACSHA256)) {
+        if (WxPayKit.verifyNotify(params, payConfig.getWxKey(), SignType.MD5)) {
             if (WxPayKit.codeIsOk(returnCode)) {
                 String outTradeNo = params.get("out_trade_no");
                 String transactionId = params.get("transaction_id");