diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java
index 7e2dff7b5..e8bb10796 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/WxPayService.java
@@ -388,6 +388,47 @@ public interface WxPayService {
    */
   void report(WxPayReportRequest request) throws WxPayException;
 
+  /**
+   * <pre>
+   * 下载对账单.
+   * 商户可以通过该接口下载历史交易清单。比如掉单、系统错误等导致商户侧和微信侧数据不一致，通过对账单核对后可校正支付状态。
+   * 注意：
+   * 1、微信侧未成功下单的交易不会出现在对账单中。支付成功后撤销的交易会出现在对账单中，跟原支付单订单号一致，bill_type为REVOKED；
+   * 2、微信在次日9点启动生成前一天的对账单，建议商户10点后再获取；
+   * 3、对账单中涉及金额的字段单位为“元”。
+   * 4、对账单接口只能下载三个月以内的账单。
+   * 接口链接：https://api.mch.weixin.qq.com/pay/downloadbill
+   * 详情请见: <a href="https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_6">下载对账单</a>
+   * </pre>
+   *
+   * @param billDate   对账单日期 bill_date 下载对账单的日期，格式：20140603
+   * @param billType   账单类型 bill_type ALL，返回当日所有订单信息，默认值，SUCCESS，返回当日成功支付的订单，REFUND，返回当日退款订单
+   * @param tarType    压缩账单 tar_type 非必传参数，固定值：GZIP，返回格式为.gzip的压缩包账单。不传则默认为数据流形式。
+   * @param deviceInfo 设备号 device_info 非必传参数，终端设备号
+   * @return 对账内容原始字符串
+   * @throws WxPayException the wx pay exception
+   */
+  String downloadRawBill(String billDate, String billType, String tarType, String deviceInfo) throws WxPayException;
+
+  /**
+   * <pre>
+   * 下载对账单（适合于需要自定义子商户号和子商户appid的情形）.
+   * 商户可以通过该接口下载历史交易清单。比如掉单、系统错误等导致商户侧和微信侧数据不一致，通过对账单核对后可校正支付状态。
+   * 注意：
+   * 1、微信侧未成功下单的交易不会出现在对账单中。支付成功后撤销的交易会出现在对账单中，跟原支付单订单号一致，bill_type为REVOKED；
+   * 2、微信在次日9点启动生成前一天的对账单，建议商户10点后再获取；
+   * 3、对账单中涉及金额的字段单位为“元”。
+   * 4、对账单接口只能下载三个月以内的账单。
+   * 接口链接：https://api.mch.weixin.qq.com/pay/downloadbill
+   * 详情请见: <a href="https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_6">下载对账单</a>
+   * </pre>
+   *
+   * @param request 下载对账单请求
+   * @return 对账内容原始字符串
+   * @throws WxPayException the wx pay exception
+   */
+  String downloadRawBill(WxPayDownloadBillRequest request) throws WxPayException;
+
   /**
    * <pre>
    * 下载对账单.
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java
index 291a646a2..7578093a8 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/service/impl/BaseWxPayServiceImpl.java
@@ -496,7 +496,19 @@ public abstract class BaseWxPayServiceImpl implements WxPayService {
   }
 
   @Override
-  public WxPayBillResult downloadBill(String billDate, String billType, String tarType, String deviceInfo) throws WxPayException {
+  public String downloadRawBill(String billDate, String billType, String tarType, String deviceInfo)
+    throws WxPayException {
+    return this.downloadRawBill(this.buildDownloadBillRequest(billDate, billType, tarType, deviceInfo));
+  }
+
+  @Override
+  public WxPayBillResult downloadBill(String billDate, String billType, String tarType, String deviceInfo)
+    throws WxPayException {
+    return this.downloadBill(this.buildDownloadBillRequest(billDate, billType, tarType, deviceInfo));
+  }
+
+  private WxPayDownloadBillRequest buildDownloadBillRequest(String billDate, String billType, String tarType,
+                                                            String deviceInfo) throws WxPayException {
     if (!BillType.ALL.equals(billType)) {
       throw new WxPayException("目前仅支持ALL类型的对账单下载");
     }
@@ -506,12 +518,22 @@ public abstract class BaseWxPayServiceImpl implements WxPayService {
     request.setBillDate(billDate);
     request.setTarType(tarType);
     request.setDeviceInfo(deviceInfo);
-
-    return this.downloadBill(request);
+    return request;
   }
 
   @Override
   public WxPayBillResult downloadBill(WxPayDownloadBillRequest request) throws WxPayException {
+    String responseContent = this.downloadRawBill(request);
+
+    if (StringUtils.isEmpty(responseContent)) {
+      return null;
+    }
+
+    return this.handleBill(request.getBillType(), responseContent);
+  }
+
+  @Override
+  public String downloadRawBill(WxPayDownloadBillRequest request) throws WxPayException {
     request.checkAndSign(this.getConfig());
 
     String url = this.getPayBaseUrl() + "/pay/downloadbill";
@@ -525,12 +547,7 @@ public abstract class BaseWxPayServiceImpl implements WxPayService {
         throw WxPayException.from(BaseWxPayResult.fromXML(responseContent, WxPayCommonResult.class));
       }
     }
-
-    if (StringUtils.isEmpty(responseContent)) {
-      return null;
-    }
-
-    return this.handleBill(request.getBillType(), responseContent);
+    return responseContent;
   }
 
   private WxPayBillResult handleBill(String billType, String responseContent) {