diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersRequest.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersRequest.java
index 1819b328c..b651100a5 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersRequest.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersRequest.java
@@ -12,6 +12,7 @@
 import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import lombok.experimental.Accessors;
 
 /**
  * 医保自费混合收款下单请求
@@ -25,6 +26,7 @@
 @Builder(builderMethodName = "newBuilder")
 @NoArgsConstructor
 @AllArgsConstructor
+@Accessors(chain = true)
 public class MedInsOrdersRequest {
 
   /**
@@ -282,72 +284,72 @@ public class MedInsOrdersRequest {
    * 字段名：总金额
    * 变量名：total_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：总金额
    * </pre>
    */
   @SerializedName("total_fee")
-  public Long totalFee;
+  public Integer totalFee;
 
   /**
    * <pre>
    * 字段名：医保统筹基金支付金额
    * 变量名：med_ins_gov_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保统筹基金支付金额
    * </pre>
    */
   @SerializedName("med_ins_gov_fee")
-  public Long medInsGovFee;
+  public Integer medInsGovFee;
 
   /**
    * <pre>
    * 字段名：医保个人账户支付金额
    * 变量名：med_ins_self_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保个人账户支付金额
    * </pre>
    */
   @SerializedName("med_ins_self_fee")
-  public Long medInsSelfFee;
+  public Integer medInsSelfFee;
 
   /**
    * <pre>
    * 字段名：医保其他基金支付金额
    * 变量名：med_ins_other_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保其他基金支付金额
    * </pre>
    */
   @SerializedName("med_ins_other_fee")
-  public Long medInsOtherFee;
+  public Integer medInsOtherFee;
 
   /**
    * <pre>
    * 字段名：医保现金支付金额
    * 变量名：med_ins_cash_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保现金支付金额
    * </pre>
    */
   @SerializedName("med_ins_cash_fee")
-  public Long medInsCashFee;
+  public Integer medInsCashFee;
 
   /**
    * <pre>
    * 字段名：微信支付现金支付金额
    * 变量名：wechat_pay_cash_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：微信支付现金支付金额
    * </pre>
    */
   @SerializedName("wechat_pay_cash_fee")
-  public Long wechatPayCashFee;
+  public Integer wechatPayCashFee;
 
   /**
    * <pre>
@@ -462,6 +464,11 @@ public class MedInsOrdersRequest {
    * 支付人身份信息
    * </pre>
    */
+  @Data
+  @Builder
+  @NoArgsConstructor
+  @AllArgsConstructor
+  @Accessors(chain = true)
   public static class PersonIdentification {
     /**
      * <pre>
@@ -507,18 +514,23 @@ public static class PersonIdentification {
    * 现金增加明细实体
    * </pre>
    */
+  @Data
+  @Builder
+  @NoArgsConstructor
+  @AllArgsConstructor
+  @Accessors(chain = true)
   public static class CashAddEntity {
     /**
      * <pre>
      * 字段名：现金增加金额
      * 变量名：cash_add_fee
      * 必填：是
-     * 类型：long
+     * 类型：Integer
      * 描述：现金增加金额
      * </pre>
      */
     @SerializedName("cash_add_fee")
-    public Long cashAddFee;
+    public Integer cashAddFee;
 
     /**
      * <pre>
@@ -538,18 +550,23 @@ public static class CashAddEntity {
    * 现金减少明细实体
    * </pre>
    */
+  @Data
+  @Builder
+  @NoArgsConstructor
+  @AllArgsConstructor
+  @Accessors(chain = true)
   public static class CashReduceEntity {
     /**
      * <pre>
      * 字段名：现金减少金额
      * 变量名：cash_reduce_fee
      * 必填：是
-     * 类型：long
+     * 类型：Integer
      * 描述：现金减少金额
      * </pre>
      */
     @SerializedName("cash_reduce_fee")
-    public Long cashReduceFee;
+    public Integer cashReduceFee;
 
     /**
      * <pre>
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersResult.java
index 4fc68e279..9a119d872 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsOrdersResult.java
@@ -65,7 +65,7 @@ public class MedInsOrdersResult {
    * </pre>
    */
   @SerializedName("med_ins_pay_status")
-  public MedInsPayStatusEnum medInsPayStatusEnum;
+  public MedInsPayStatusEnum medInsPayStatus;
 
   /**
    * <pre>
@@ -320,72 +320,72 @@ public class MedInsOrdersResult {
    * 字段名：总金额
    * 变量名：total_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：总金额
    * </pre>
    */
   @SerializedName("total_fee")
-  public Long totalFee;
+  public Integer totalFee;
 
   /**
    * <pre>
    * 字段名：医保统筹基金支付金额
    * 变量名：med_ins_gov_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保统筹基金支付金额
    * </pre>
    */
   @SerializedName("med_ins_gov_fee")
-  public Long medInsGovFee;
+  public Integer medInsGovFee;
 
   /**
    * <pre>
    * 字段名：医保个人账户支付金额
    * 变量名：med_ins_self_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保个人账户支付金额
    * </pre>
    */
   @SerializedName("med_ins_self_fee")
-  public Long medInsSelfFee;
+  public Integer medInsSelfFee;
 
   /**
    * <pre>
    * 字段名：医保其他基金支付金额
    * 变量名：med_ins_other_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保其他基金支付金额
    * </pre>
    */
   @SerializedName("med_ins_other_fee")
-  public Long medInsOtherFee;
+  public Integer medInsOtherFee;
 
   /**
    * <pre>
    * 字段名：医保现金支付金额
    * 变量名：med_ins_cash_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：医保现金支付金额
    * </pre>
    */
   @SerializedName("med_ins_cash_fee")
-  public Long medInsCashFee;
+  public Integer medInsCashFee;
 
   /**
    * <pre>
    * 字段名：微信支付现金支付金额
    * 变量名：wechat_pay_cash_fee
    * 必填：否
-   * 类型：long
+   * 类型：Integer
    * 描述：微信支付现金支付金额
    * </pre>
    */
   @SerializedName("wechat_pay_cash_fee")
-  public Long wechatPayCashFee;
+  public Integer wechatPayCashFee;
 
   /**
    * <pre>
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsRefundNotifyRequest.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsRefundNotifyRequest.java
index b6e15a364..cb935b52c 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsRefundNotifyRequest.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/mipay/MedInsRefundNotifyRequest.java
@@ -20,16 +20,6 @@
 @AllArgsConstructor
 public class MedInsRefundNotifyRequest {
 
-  /**
-   * <pre>
-   * 字段名：医保自费混合订单号
-   * 必填：是
-   * 类型：string(32)
-   * 描述：医保自费混合订单号
-   * </pre>
-   */
-  private String mixTradeNo;
-
   /**
    * <pre>
    * 字段名：医疗机构的商户号
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/MiPayService.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/MiPayService.java
index 83b75ad40..5e2f678c1 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/MiPayService.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/MiPayService.java
@@ -87,8 +87,9 @@ public interface MiPayService {
    * </pre>
    *
    * @param request 医保退款通知请求参数
+   * @param mixTradeNo 【医保自费混合订单号】 医保自费混合订单号
    * @throws WxPayException the wx pay exception
    */
-  void medInsRefundNotify(MedInsRefundNotifyRequest request) throws WxPayException;
+  void medInsRefundNotify(MedInsRefundNotifyRequest request, String mixTradeNo) throws WxPayException;
 
 }
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImpl.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImpl.java
index 3063d7731..769b789fa 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImpl.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImpl.java
@@ -59,8 +59,8 @@ public MiPayNotifyV3Result parseMiPayNotifyV3Result(String notifyData, Signature
   }
 
   @Override
-  public void medInsRefundNotify(MedInsRefundNotifyRequest request) throws WxPayException {
-    String url = String.format("%s/v3/med-ins/refunds/notify?mix_trade_no=%s", this.payService.getPayBaseUrl(), request.getMixTradeNo());
+  public void medInsRefundNotify(MedInsRefundNotifyRequest request, String mixTradeNo) throws WxPayException {
+    String url = String.format("%s/v3/med-ins/refunds/notify?mix_trade_no=%s", this.payService.getPayBaseUrl(), mixTradeNo);
     this.payService.postV3(url, GSON.toJson(request));
   }
 
diff --git a/weixin-java-pay/src/test/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImplTest.java b/weixin-java-pay/src/test/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImplTest.java
index 23c3c5681..095d355bd 100644
--- a/weixin-java-pay/src/test/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImplTest.java
+++ b/weixin-java-pay/src/test/java/com/github/binarywang/wxpay/service/impl/MiPayServiceImplTest.java
@@ -131,13 +131,12 @@ public void medInsRefundNotify() throws WxPayException {
 
     // 解析请求参数
     MedInsRefundNotifyRequest request = GSON.fromJson(requestParamStr, MedInsRefundNotifyRequest.class);
-    request.setMixTradeNo(mixTradeNo);
 
     MiPayService miPayService = wxPayService.getMiPayService();
 
     try {
       // 调用医保退款通知方法，预期会失败，因为是模拟数据
-      miPayService.medInsRefundNotify(request);
+      miPayService.medInsRefundNotify(request,mixTradeNo);
       log.info("医保退款通知调用成功");
     } catch (WxPayException e) {
       // 预期会抛出异常，因为是模拟数据