diff --git a/ebike-payment/src/main/java/com/cdzy/payment/service/impl/EbikeWxPayServiceImpl.java b/ebike-payment/src/main/java/com/cdzy/payment/service/impl/EbikeWxPayServiceImpl.java
index bf5ca4e..841fd26 100644
--- a/ebike-payment/src/main/java/com/cdzy/payment/service/impl/EbikeWxPayServiceImpl.java
+++ b/ebike-payment/src/main/java/com/cdzy/payment/service/impl/EbikeWxPayServiceImpl.java
@@ -617,11 +617,14 @@ public class EbikeWxPayServiceImpl implements EbikeWxPayService {
             String msg = messageNode != null ? messageNode.asText() : "未知错误";
 
             return switch (code) {
-                case "NOT_ENOUGH" -> "商户账户余额不足，请联系客服处理";
-                case "RESOURCE_NOT_EXISTS" -> "原支付订单不存在或已过期";
-                case "ORDER_PAID" -> "订单已支付，不能重复退款";
-                case "REFUND_NOT_ALLOWED" -> "该订单不支持退款";
-                case "FREQ_LIMIT" -> "退款频率过高，请稍后再试";
+                case "INVALID_REQUEST" -> "请求参数符合参数格式，但不符合业务规则";
+                case "SIGN_ERROR" -> "签名错误";
+                case "NOT_ENOUGH" -> "商户账户余额不足，请联系管理员";
+                case "USER_ACCOUNT_ABNORMAL" -> "退款请求失败";
+                case "RESOURCE_NOT_EXISTS" -> "退款单不存在";
+                case "MCH_NOT_EXISTS" -> "MCHID不存在";
+                case "FREQUENCY_LIMITED" -> "退款频率过高，请稍后再试";
+                case "SYSTEM_ERROR" -> "系统超时";
                 default -> msg;
             };
         } catch (Exception ex) {