diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinExtensions.cs
index 88a9b759..d9cf70c5 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinExtensions.cs
@@ -15,6 +15,7 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
         /// <para>REF: https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/mp-access-token/getAccessToken.html </para>
         /// <para>REF: https://developers.weixin.qq.com/minigame/dev/api-backend/open-api/access-token/auth.getAccessToken.html </para>
         /// <para>REF: https://developers.weixin.qq.com/doc/channels/API/basics/getaccesstoken.html </para>
+        /// <para>REF: https://developers.weixin.qq.com/doc/channels/API/windowproduct/getaccesstoken.html </para>
         /// </summary>
         /// <param name="client"></param>
         /// <param name="request"></param>
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
index 8363b315..b76c6468 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
@@ -54,5 +54,47 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
             }
         }
         #endregion
+
+        #region ECWindow
+        /// <summary>
+        /// <para>异步调用 [POST] /channels/ec/window/product/add 接口。</para>
+        /// <para>REF: https://developers.weixin.qq.com/doc/channels/API/windowproduct/add.html </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ChannelsECWindowProductAddResponse> ExecuteChannelsECWindowProductAddAsync(this WechatApiClient client, Models.ChannelsECWindowProductAddRequest 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, "channels", "ec", "window", "product", "add")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.ChannelsECWindowProductAddResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /channels/ec/window/product/off 接口。</para>
+        /// <para>REF: https://developers.weixin.qq.com/doc/channels/API/windowproduct/off.html </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ChannelsECWindowProductOffResponse> ExecuteChannelsECWindowProductOffAsync(this WechatApiClient client, Models.ChannelsECWindowProductOffRequest 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, "channels", "ec", "window", "product", "off")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.ChannelsECWindowProductOffResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+        #endregion
     }
 }
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductAddRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductAddRequest.cs
new file mode 100644
index 00000000..60364bdb
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductAddRequest.cs
@@ -0,0 +1,29 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/window/product/add 接口的请求。</para>
+    /// </summary>
+    public class ChannelsECWindowProductAddRequest : WechatApiRequest, IInferable<ChannelsECWindowProductAddRequest, ChannelsECWindowProductAddResponse>
+    {
+        /// <summary>
+        /// 获取或设置商品 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("product_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("product_id")]
+        public long ProductId { get; set; }
+
+        /// <summary>
+        /// 获取或设置商品来源店铺的 AppId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("appid")]
+        [System.Text.Json.Serialization.JsonPropertyName("appid")]
+        public string AppId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置是否需要在个人橱窗页隐藏。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("is_hide_for_window")]
+        [System.Text.Json.Serialization.JsonPropertyName("is_hide_for_window")]
+        public bool? IsHideForWindow { get; set; }
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductAddResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductAddResponse.cs
new file mode 100644
index 00000000..cf1276fd
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductAddResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/window/product/add 接口的响应。</para>
+    /// </summary>
+    public class ChannelsECWindowProductAddResponse : WechatApiResponse
+    {
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductOffRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductOffRequest.cs
new file mode 100644
index 00000000..a7efb739
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductOffRequest.cs
@@ -0,0 +1,22 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/window/product/off 接口的请求。</para>
+    /// </summary>
+    public class ChannelsECWindowProductOffRequest : WechatApiRequest, IInferable<ChannelsECWindowProductOffRequest, ChannelsECWindowProductOffResponse>
+    {
+        /// <summary>
+        /// 获取或设置商品 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("product_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("product_id")]
+        public long ProductId { get; set; }
+
+        /// <summary>
+        /// 获取或设置商品来源店铺的 AppId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("appid")]
+        [System.Text.Json.Serialization.JsonPropertyName("appid")]
+        public string AppId { get; set; } = string.Empty;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductOffResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductOffResponse.cs
new file mode 100644
index 00000000..15529f0d
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECWindow/ChannelsECWindowProductOffResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/window/product/off 接口的响应。</para>
+    /// </summary>
+    public class ChannelsECWindowProductOffResponse : WechatApiResponse
+    {
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECWindow/ChannelsECWindowProductAddRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECWindow/ChannelsECWindowProductAddRequest.json
new file mode 100644
index 00000000..515a0540
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECWindow/ChannelsECWindowProductAddRequest.json
@@ -0,0 +1,5 @@
+{
+    "product_id": "100234056",
+    "appid": "wxee9f94a3360ad25f",
+    "is_hide_for_window": true
+}