diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
index 7d8e92f2..6a850ad2 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
@@ -3739,6 +3739,77 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
             return await client.SendFlurlRequestAsJsonAsync<Models.ChannelsECOrderDeliverySendResponse>(flurlReq, data: request, cancellationToken: cancellationToken).ConfigureAwait(false);
         }
         #endregion
+
+        #region ECOrder/PreshipmentChangeSKU
+        /// <summary>
+        /// <para>异步调用 [POST] /channels/ec/order/preshipmentchangesku/approve 接口。</para>
+        /// <para>
+        /// REF: <br/>
+        /// <![CDATA[ https://developers.weixin.qq.com/doc/store/shop/API/order/preshipment_change_sku_approve.html ]]>
+        /// </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ChannelsECOrderPreshipmentChangeSKUApproveResponse> ExecuteChannelsECOrderPreshipmentChangeSKUApproveAsync(this WechatApiClient client, Models.ChannelsECOrderPreshipmentChangeSKUApproveRequest 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
+                .CreateFlurlRequest(request, HttpMethod.Post, "channels", "ec", "order", "preshipmentchangesku", "approve")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendFlurlRequestAsJsonAsync<Models.ChannelsECOrderPreshipmentChangeSKUApproveResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /channels/ec/order/preshipmentchangesku/reject 接口。</para>
+        /// <para>
+        /// REF: <br/>
+        /// <![CDATA[ https://developers.weixin.qq.com/doc/store/shop/API/order/preshipment_change_sku_reject.html ]]>
+        /// </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ChannelsECOrderPreshipmentChangeSKURejectResponse> ExecuteChannelsECOrderPreshipmentChangeSKURejectAsync(this WechatApiClient client, Models.ChannelsECOrderPreshipmentChangeSKURejectRequest 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
+                .CreateFlurlRequest(request, HttpMethod.Post, "channels", "ec", "order", "preshipmentchangesku", "reject")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendFlurlRequestAsJsonAsync<Models.ChannelsECOrderPreshipmentChangeSKURejectResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /channels/ec/order/preshipmentchangesku/get 接口。</para>
+        /// <para>
+        /// REF: <br/>
+        /// <![CDATA[ https://developers.weixin.qq.com/doc/store/shop/API/order/preshipment_change_sku_reject.html ]]>
+        /// </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ChannelsECOrderPreshipmentChangeSKUGetResponse> ExecuteChannelsECOrderPreshipmentChangeSKUGetAsync(this WechatApiClient client, Models.ChannelsECOrderPreshipmentChangeSKUGetRequest 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
+                .CreateFlurlRequest(request, HttpMethod.Post, "channels", "ec", "order", "preshipmentchangesku", "get")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendFlurlRequestAsJsonAsync<Models.ChannelsECOrderPreshipmentChangeSKUGetResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+        #endregion
         #endregion
 
         #region ECProduct
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveRequest.cs
new file mode 100644
index 00000000..d168dc03
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveRequest.cs
@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/order/preshipmentchangesku/approve 接口的请求。</para>
+    /// </summary>
+    public class ChannelsECOrderPreshipmentChangeSKUApproveRequest : WechatApiRequest, IInferable<ChannelsECOrderPreshipmentChangeSKUApproveRequest, ChannelsECOrderPreshipmentChangeSKUApproveResponse>
+    {
+        /// <summary>
+        /// 获取或设置订单 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("order_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("order_id")]
+        public string OrderId { get; set; } = string.Empty;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveResponse.cs
new file mode 100644
index 00000000..ae5cd292
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/order/preshipmentchangesku/approve 接口的响应。</para>
+    /// </summary>
+    public class ChannelsECOrderPreshipmentChangeSKUApproveResponse : WechatApiResponse
+    {
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetRequest.cs
new file mode 100644
index 00000000..b25d92ee
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetRequest.cs
@@ -0,0 +1,24 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/order/preshipmentchangesku/get 接口的请求。</para>
+    /// </summary>
+    public class ChannelsECOrderPreshipmentChangeSKUGetRequest : WechatApiRequest, IInferable<ChannelsECOrderPreshipmentChangeSKUGetRequest, ChannelsECOrderPreshipmentChangeSKUGetResponse>
+    {
+        /// <summary>
+        /// 获取或设置分页页数。
+        /// <para>默认值：1</para>
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("page")]
+        [System.Text.Json.Serialization.JsonPropertyName("page")]
+        public int Page { get; set; } = 1;
+
+        /// <summary>
+        /// 获取或设置分页每页数量。
+        /// <para>默认值：10</para>
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("page_size")]
+        [System.Text.Json.Serialization.JsonPropertyName("page_size")]
+        public int Limit { get; set; } = 10;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetResponse.cs
new file mode 100644
index 00000000..dbad4ba9
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetResponse.cs
@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/order/preshipmentchangesku/get 接口的响应。</para>
+    /// </summary>
+    public class ChannelsECOrderPreshipmentChangeSKUGetResponse : WechatApiResponse
+    {
+        /// <summary>
+        /// 获取或设置订单 ID 列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("order_ids")]
+        [System.Text.Json.Serialization.JsonPropertyName("order_ids")]
+        public string[] OrderIdList { get; set; } = default!;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectRequest.cs
new file mode 100644
index 00000000..f2a63af5
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectRequest.cs
@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/order/preshipmentchangesku/reject 接口的请求。</para>
+    /// </summary>
+    public class ChannelsECOrderPreshipmentChangeSKURejectRequest : WechatApiRequest, IInferable<ChannelsECOrderPreshipmentChangeSKURejectRequest, ChannelsECOrderPreshipmentChangeSKURejectResponse>
+    {
+        /// <summary>
+        /// 获取或设置订单 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("order_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("order_id")]
+        public string OrderId { get; set; } = string.Empty;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectResponse.cs
new file mode 100644
index 00000000..0548cd51
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectResponse.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/order/preshipmentchangesku/reject 接口的响应。</para>
+    /// </summary>
+    public class ChannelsECOrderPreshipmentChangeSKURejectResponse : WechatApiResponse
+    {
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveRequest.json
new file mode 100644
index 00000000..802c3851
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUApproveRequest.json
@@ -0,0 +1,3 @@
+{
+    "order_id": "111111111"
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetRequest.json
new file mode 100644
index 00000000..909bfce3
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetRequest.json
@@ -0,0 +1,4 @@
+{
+    "page": "1",
+    "page_size": "100"
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetResponse.json
new file mode 100644
index 00000000..d5e626d1
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKUGetResponse.json
@@ -0,0 +1,5 @@
+{
+    "errcode": 0,
+    "errmsg": "ok",
+    "order_ids": [ "123456789" ]
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectRequest.json
new file mode 100644
index 00000000..802c3851
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/PreshipmentChangeSKU/ChannelsECOrderPreshipmentChangeSKURejectRequest.json
@@ -0,0 +1,3 @@
+{
+    "order_id": "111111111"
+}