diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.cs
index 9fd81970..50bf3885 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.cs
@@ -11,5 +11,12 @@
         [Newtonsoft.Json.JsonProperty("chain_id")]
         [System.Text.Json.Serialization.JsonPropertyName("chain_id")]
         public string ChainId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置分组 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("groupid")]
+        [System.Text.Json.Serialization.JsonPropertyName("groupid")]
+        public int? GroupId { get; set; }
     }
 }
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.json
index 07b65e44..fa0c60e9 100644
--- a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.json
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/Corp/CgibinCorpGroupCorpGetChainGroupRequest.json
@@ -1,3 +1,4 @@
 {
-    "chain_id": "Chxxxxxx"
+    "chain_id": "Chxxxxxx",
+    "groupid": 1
 }