diff --git a/docs/WechatTenpayV3/Advanced_ModelDefinition.md b/docs/WechatTenpayV3/Advanced_ModelDefinition.md
index 08f34252..315db225 100644
--- a/docs/WechatTenpayV3/Advanced_ModelDefinition.md
+++ b/docs/WechatTenpayV3/Advanced_ModelDefinition.md
@@ -424,6 +424,8 @@
 
         -   申请资金账单：`GetBillFundflowBill`
 
+        -   申请单个子商户资金账单：`GetBillSubMerchantFundflowBill`
+
         -   下载账单：`DownloadBillFile`
 
     -   APP 支付
@@ -442,6 +444,8 @@
 
         -   申请资金账单：`GetBillFundflowBill`
 
+        -   申请单个子商户资金账单：`GetBillSubMerchantFundflowBill`
+
         -   下载账单：`DownloadBillFile`
 
     -   H5 支付
@@ -460,6 +464,8 @@
 
         -   申请资金账单：`GetBillFundflowBill`
 
+        -   申请单个子商户资金账单：`GetBillSubMerchantFundflowBill`
+
         -   下载账单：`DownloadBillFile`
 
     -   Native 支付
@@ -478,6 +484,8 @@
 
         -   申请资金账单：`GetBillFundflowBill`
 
+        -   申请单个子商户资金账单：`GetBillSubMerchantFundflowBill`
+
         -   下载账单：`DownloadBillFile`
 
     -   小程序支付
@@ -496,6 +504,8 @@
 
         -   申请资金账单：`GetBillFundflowBill`
 
+        -   申请单个子商户资金账单：`GetBillSubMerchantFundflowBill`
+
         -   下载账单：`DownloadBillFile`
 
     -   合单支付
@@ -522,6 +532,8 @@
 
         -   申请资金账单：`GetBillFundflowBill`
 
+        -   申请单个子商户资金账单：`GetBillSubMerchantFundflowBill`
+
         -   下载账单：`DownloadBillFile`
 
 -   经营能力
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteBillExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteBillExtensions.cs
index c7a0e12c..9a83dd85 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteBillExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteBillExtensions.cs
@@ -96,6 +96,11 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3
         /// <summary>
         /// <para>异步调用 [GET] /bill/sub-merchant-fundflowbill 接口。</para>
         /// <para>REF: https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_1_12.shtml </para>
+        /// <para>REF: https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_2_12.shtml </para>
+        /// <para>REF: https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_3_12.shtml </para>
+        /// <para>REF: https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_4_12.shtml </para>
+        /// <para>REF: https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter4_5_12.shtml </para>
+        /// <para>REF: https://pay.weixin.qq.com/wiki/doc/apiv3_partner/apis/chapter5_1_20.shtml </para>
         /// </summary>
         /// <param name="client"></param>
         /// <param name="request"></param>