diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteMerchantMediaExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteMerchantMediaExtensions.cs
index c3d97bcc..a8827cfd 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteMerchantMediaExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Extensions/WechatTenpayClientExecuteMerchantMediaExtensions.cs
@@ -1,10 +1,7 @@
 using System;
 using System.Net.Http;
-using System.Net.Http.Headers;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using System.Web;
 using Flurl.Http;
 
 namespace SKIT.FlurlHttpClient.Wechat.TenpayV3
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/GetMerchantServiceComplaintByComplaintIdResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/GetMerchantServiceComplaintByComplaintIdResponse.cs
index 03064e47..077aa7cf 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/GetMerchantServiceComplaintByComplaintIdResponse.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/GetMerchantServiceComplaintByComplaintIdResponse.cs
@@ -118,6 +118,13 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
         [System.Text.Json.Serialization.JsonPropertyName("complaint_media_list")]
         public Types.ComplaintMedia[] ComplaintMediaList { get; set; } = default!;
 
+        /// <summary>
+        /// 获取或设置问题类型。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("problem_type")]
+        [System.Text.Json.Serialization.JsonPropertyName("problem_type")]
+        public string? ProblemType { get; set; }
+
         /// <summary>
         /// 获取或设置问题描述。
         /// </summary>
@@ -125,6 +132,13 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
         [System.Text.Json.Serialization.JsonPropertyName("problem_description")]
         public string ProblemDescription { get; set; } = default!;
 
+        /// <summary>
+        /// 获取或设置申请退款金额（单位：分）。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("apply_refund_amount")]
+        [System.Text.Json.Serialization.JsonPropertyName("apply_refund_amount")]
+        public int? ApplyRefundAmount { get; set; }
+
         /// <summary>
         /// 获取或设置投诉单是否已全额退款。
         /// </summary>
@@ -145,5 +159,12 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
         [Newtonsoft.Json.JsonProperty("user_complaint_times")]
         [System.Text.Json.Serialization.JsonPropertyName("user_complaint_times")]
         public int UserComplaintTimes { get; set; }
+
+        /// <summary>
+        /// 获取或设置用户标签列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("user_tag_list")]
+        [System.Text.Json.Serialization.JsonPropertyName("user_tag_list")]
+        public string[]? UserTagList { get; set; }
     }
 }
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.cs
index f910a3c5..ae2da1fd 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.cs
@@ -82,6 +82,13 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
                 [System.Text.Json.Serialization.JsonPropertyName("complaint_media_list")]
                 public Types.ComplaintMedia[] ComplaintMediaList { get; set; } = default!;
 
+                /// <summary>
+                /// 获取或设置问题类型。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("problem_type")]
+                [System.Text.Json.Serialization.JsonPropertyName("problem_type")]
+                public string? ProblemType { get; set; }
+
                 /// <summary>
                 /// 获取或设置问题描述。
                 /// </summary>
@@ -89,6 +96,13 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
                 [System.Text.Json.Serialization.JsonPropertyName("problem_description")]
                 public string ProblemDescription { get; set; } = default!;
 
+                /// <summary>
+                /// 获取或设置申请退款金额（单位：分）。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("apply_refund_amount")]
+                [System.Text.Json.Serialization.JsonPropertyName("apply_refund_amount")]
+                public int? ApplyRefundAmount { get; set; }
+
                 /// <summary>
                 /// 获取或设置投诉单是否已全额退款。
                 /// </summary>
@@ -109,6 +123,13 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
                 [Newtonsoft.Json.JsonProperty("user_complaint_times")]
                 [System.Text.Json.Serialization.JsonPropertyName("user_complaint_times")]
                 public int UserComplaintTimes { get; set; }
+
+                /// <summary>
+                /// 获取或设置用户标签列表。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("user_tag_list")]
+                [System.Text.Json.Serialization.JsonPropertyName("user_tag_list")]
+                public string[]? UserTagList { get; set; }
             }
         }
 
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressRequest.cs
new file mode 100644
index 00000000..66afc338
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressRequest.cs
@@ -0,0 +1,52 @@
+using System.Collections.Generic;
+
+namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /merchant-service/complaints-v2/{complaint_id}/update-refund-progress 接口的请求。</para>
+    /// </summary>
+    public class UpdateMerchantServiceComplaintRefundProgressRequest : WechatTenpayRequest
+    {
+        /// <summary>
+        /// 获取或设置投诉单号。
+        /// </summary>
+        [Newtonsoft.Json.JsonIgnore]
+        [System.Text.Json.Serialization.JsonIgnore]
+        public string ComplaintId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置审批动作。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("action")]
+        [System.Text.Json.Serialization.JsonPropertyName("action")]
+        public string Action { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置预计发起退款天数。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("launch_refund_day")]
+        [System.Text.Json.Serialization.JsonPropertyName("launch_refund_day")]
+        public int? LaunchRefundDays { get; set; }
+
+        /// <summary>
+        /// 获取或设置拒绝退款原因。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("reject_reason")]
+        [System.Text.Json.Serialization.JsonPropertyName("reject_reason")]
+        public string? RejectReason { get; set; }
+
+        /// <summary>
+        /// 获取或设置拒绝退款的举证图片 MediaId 列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("reject_media_list")]
+        [System.Text.Json.Serialization.JsonPropertyName("reject_media_list")]
+        public IList<string>? RejectMediaIdList { get; set; }
+
+        /// <summary>
+        /// 获取或设置备注。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("remark")]
+        [System.Text.Json.Serialization.JsonPropertyName("remark")]
+        public string? Remark { get; set; }
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressResponse.cs
new file mode 100644
index 00000000..b581bae1
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /merchant-service/complaints-v2/{complaint_id}/update-refund-progress 接口的响应。</para>
+    /// </summary>
+    public class UpdateMerchantServiceComplaintRefundProgressResponse : WechatTenpayResponse
+    {
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.json b/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.json
index 93fed3c5..4da11e0b 100644
--- a/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.json
+++ b/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/QueryMerchantServiceComplaintsResponse.json
@@ -21,9 +21,9 @@
                     "amount": 3
                 },
                 {
-                    "transaction_id": "4200000404201909069117982536",
-                    "out_trade_no": "20190906154617947772231",
-                    "amount": 9
+                    "transaction_id": "4200000404201909069117582836",
+                    "out_trade_no": "20190906154617947762291",
+                    "amount": 4
                 }
             ],
             "complaint_full_refunded": true,
diff --git a/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressRequest.json b/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressRequest.json
new file mode 100644
index 00000000..9fcdae6f
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.TenpayV3.UnitTests/ModelSamples/MerchantService/ComplaintsV2/UpdateMerchantServiceComplaintRefundProgressRequest.json
@@ -0,0 +1,7 @@
+{
+    "action": "REJECT",
+    "launch_refund_day": 3,
+    "reject_media_list": [ "file23578_21798531.jpg" ],
+    "reject_reason": "拒绝退款",
+    "remark": "不同意退款"
+}
\ No newline at end of file