diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs
index 87175204..a90316c6 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinExternalContactExtensions.cs
@@ -1069,6 +1069,26 @@ namespace SKIT.FlurlHttpClient.Wechat.Work
             return await client.SendRequestWithJsonAsync<Models.CgibinExternalContactRemindGroupMessageSendResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
         }
 
+        /// <summary>
+        /// <para>异步调用 [POST] /cgi-bin/externalcontact/cancel_groupmsg_send 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/97611 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinExternalContactCancelGroupMessageSendResponse> ExecuteCgibinExternalContactCancelGroupMessageSendAsync(this WechatWorkClient client, Models.CgibinExternalContactCancelGroupMessageSendRequest request, CancellationToken cancellationToken = default)
+        {
+            if (client is null) throw new ArgumentNullException(nameof(client));
+            if (request is null) throw new ArgumentNullException(nameof(request));
+
+            IFlurlRequest flurlReq = client
+                .CreateRequest(request, HttpMethod.Post, "cgi-bin", "externalcontact", "cancel_groupmsg_send")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinExternalContactCancelGroupMessageSendResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
         /// <summary>
         /// <para>异步调用 [POST] /cgi-bin/externalcontact/group_welcome_template/add 接口。</para>
         /// <para>REF: https://developer.work.weixin.qq.com/document/path/92366 </para>
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendRequest.cs
new file mode 100644
index 00000000..f530418a
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendRequest.cs
@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/externalcontact/cancel_groupmsg_send 接口的请求。</para>
+    /// </summary>
+    public class CgibinExternalContactCancelGroupMessageSendRequest : WechatWorkRequest
+    {
+        /// <summary>
+        /// 获取或设置群发消息 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("msgid")]
+        [System.Text.Json.Serialization.JsonPropertyName("msgid")]
+        public string MessageId { get; set; } = string.Empty;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendResponse.cs
new file mode 100644
index 00000000..f07348e4
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/externalcontact/cancel_groupmsg_send 接口的响应。</para>
+    /// </summary>
+    public class CgibinExternalContactCancelGroupMessageSendResponse : WechatWorkResponse
+    {
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendRequest.json
new file mode 100644
index 00000000..ec63099b
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinExternalContact/GroupMessage/CgibinExternalContactCancelGroupMessageSendRequest.json
@@ -0,0 +1,3 @@
+{
+    "msgid": "msgGCAAAXtWyujaWJHDDGi0mACAAAA"
+}