diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinOAExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinOAExtensions.cs
index 4be9a371..f5e2a43f 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinOAExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinOAExtensions.cs
@@ -597,6 +597,50 @@ namespace SKIT.FlurlHttpClient.Wechat.Work
 
             return await client.SendRequestWithJsonAsync<Models.CgibinOAScheduleDeleteResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
         }
+
+        #region ScheduleAttendees
+        /// <summary>
+        /// <para>异步调用 [POST] /cgi-bin/oa/schedule/add_attendees 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/93648 </para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/93703 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinOAScheduleAddAttendeesResponse> ExecuteCgibinOAScheduleAddAttendeesAsync(this WechatWorkClient client, Models.CgibinOAScheduleAddAttendeesRequest 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", "oa", "schedule", "add_attendees")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinOAScheduleAddAttendeesResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /cgi-bin/oa/schedule/del_attendees 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/93648 </para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/93703 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinOAScheduleDeleteAttendeesResponse> ExecuteCgibinOAScheduleDeleteAttendeesAsync(this WechatWorkClient client, Models.CgibinOAScheduleDeleteAttendeesRequest 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", "oa", "schedule", "del_attendees")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinOAScheduleDeleteAttendeesResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+        #endregion
         #endregion
     }
 }
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesRequest.cs
new file mode 100644
index 00000000..020b3a30
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesRequest.cs
@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/oa/schedule/add_attendees 接口的请求。</para>
+    /// </summary>
+    public class CgibinOAScheduleAddAttendeesRequest : WechatWorkRequest
+    {
+        public static class Types
+        {
+            public class Attendee : CgibinOAScheduleAddRequest.Types.Schedule.Types.Attendee
+            {
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置日程 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("schedule_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("schedule_id")]
+        public string ScheduleId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置要添加的日程参与者列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("attendees")]
+        [System.Text.Json.Serialization.JsonPropertyName("attendees")]
+        public IList<Types.Attendee> AttendeeList { get; set; } = new List<Types.Attendee>();
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesResponse.cs
new file mode 100644
index 00000000..7f62cbc2
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/oa/schedule/add_attendees 接口的响应。</para>
+    /// </summary>
+    public class CgibinOAScheduleAddAttendeesResponse : WechatWorkResponse
+    {
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesRequest.cs
new file mode 100644
index 00000000..9299d523
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesRequest.cs
@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/oa/schedule/del_attendees 接口的请求。</para>
+    /// </summary>
+    public class CgibinOAScheduleDeleteAttendeesRequest : WechatWorkRequest
+    {
+        public static class Types
+        {
+            public class Attendee : CgibinOAScheduleAddAttendeesRequest.Types.Attendee
+            {
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置日程 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("schedule_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("schedule_id")]
+        public string ScheduleId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置要删除的日程参与者列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("attendees")]
+        [System.Text.Json.Serialization.JsonPropertyName("attendees")]
+        public IList<Types.Attendee> AttendeeList { get; set; } = new List<Types.Attendee>();
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesResponse.cs
new file mode 100644
index 00000000..15528cb7
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/oa/schedule/del_attendees 接口的响应。</para>
+    /// </summary>
+    public class CgibinOAScheduleDeleteAttendeesResponse : WechatWorkResponse
+    {
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinService/CgibinServiceGetAppQrcodeRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinService/CgibinServiceGetAppQrcodeRequest.cs
index 1db8a15d..a96313a3 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinService/CgibinServiceGetAppQrcodeRequest.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinService/CgibinServiceGetAppQrcodeRequest.cs
@@ -10,7 +10,7 @@
         /// </summary>
         [Newtonsoft.Json.JsonProperty("appid")]
         [System.Text.Json.Serialization.JsonPropertyName("appid")]
-        public string? AppId { get; set; }
+        public int? AppId { get; set; }
 
         /// <summary>
         /// 获取或设置安装渠道。
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesRequest.json
new file mode 100644
index 00000000..0178ced4
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesRequest.json
@@ -0,0 +1,8 @@
+{
+    "schedule_id": "17c7d2bd9f20d652840f72f59e796AAA",
+    "attendees": [
+        {
+            "userid": "userid2"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesResponse.json
new file mode 100644
index 00000000..f752befe
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleAddAttendeesResponse.json
@@ -0,0 +1,4 @@
+{
+    "errcode": 0,
+    "errmsg": "ok"
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesRequest.json
new file mode 100644
index 00000000..0178ced4
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesRequest.json
@@ -0,0 +1,8 @@
+{
+    "schedule_id": "17c7d2bd9f20d652840f72f59e796AAA",
+    "attendees": [
+        {
+            "userid": "userid2"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesResponse.json
new file mode 100644
index 00000000..f752befe
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinOA/Schedule/Attendees/CgibinOAScheduleDeleteAttendeesResponse.json
@@ -0,0 +1,4 @@
+{
+    "errcode": 0,
+    "errmsg": "ok"
+}
\ No newline at end of file