diff --git a/src/SKIT.FlurlHttpClient.ByteDance.MicroApp/Models/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.cs b/src/SKIT.FlurlHttpClient.ByteDance.MicroApp/Models/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.cs
index 593fed29..4204e8f6 100644
--- a/src/SKIT.FlurlHttpClient.ByteDance.MicroApp/Models/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.cs
+++ b/src/SKIT.FlurlHttpClient.ByteDance.MicroApp/Models/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.cs
@@ -29,6 +29,27 @@ public class Refund
                 [Newtonsoft.Json.JsonProperty("refund_status")]
                 [System.Text.Json.Serialization.JsonPropertyName("refund_status")]
                 public string RefundStatus { get; set; } = default!;
+
+                /// <summary>
+                /// 获取或设置退款时间戳。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("refunded_at")]
+                [System.Text.Json.Serialization.JsonPropertyName("refunded_at")]
+                public long RefundTimestamp { get; set; }
+
+                /// <summary>
+                /// 获取或设置是否分账。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("is_all_settled")]
+                [System.Text.Json.Serialization.JsonPropertyName("is_all_settled")]
+                public bool IsAllSettled { get; set; }
+
+                /// <summary>
+                /// 获取或设置自定义字段。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("cp_extra")]
+                [System.Text.Json.Serialization.JsonPropertyName("cp_extra")]
+                public string? Extra { get; set; }
             }
         }
 
diff --git a/test/SKIT.FlurlHttpClient.ByteDance.MicroApp.UnitTests/ModelSamples/_/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.json b/test/SKIT.FlurlHttpClient.ByteDance.MicroApp.UnitTests/ModelSamples/_/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.json
index f46eb8d7..50d8310d 100644
--- a/test/SKIT.FlurlHttpClient.ByteDance.MicroApp.UnitTests/ModelSamples/_/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.json
+++ b/test/SKIT.FlurlHttpClient.ByteDance.MicroApp.UnitTests/ModelSamples/_/_Legacy/AppsECPay/Order/AppsECPayQueryRefundV1Response.json
@@ -1,9 +1,12 @@
-{
+{
     "err_no": 0,
     "err_tips": "",
     "refundInfo": {
-        "refund_no": "69821555158047006",
-        "refund_amount": 3580,
-        "refund_status": "SUCCESS"
+        "refund_no": "N7067470744111892000",
+        "refund_amount": 190,
+        "refund_status": "SUCCESS",
+        "refunded_at": 1645523798,
+        "is_all_settled": false,
+        "cp_extra": ""
     }
 }