diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
index 395b9dcc..91bfe79a 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteChannelsExtensions.cs
@@ -3281,6 +3281,31 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
         #endregion
         #endregion
 
+        #region ECOpen
+        /// <summary>
+        /// <para>异步调用 [POST] /channels/ec/open/get_download_url 接口。</para>
+        /// <para>
+        /// REF: <br/>
+        /// <![CDATA[ https://developers.weixin.qq.com/doc/store/API/miniandstore/get_download_url.html ]]>
+        /// </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.ChannelsECOpenGetDownloadUrlResponse> ExecuteChannelsECOpenGetDownloadUrlAsync(this WechatApiClient client, Models.ChannelsECOpenGetDownloadUrlRequest 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", "open", "get_download_url")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendFlurlRequestAsJsonAsync<Models.ChannelsECOpenGetDownloadUrlResponse>(flurlReq, data: request, cancellationToken: cancellationToken).ConfigureAwait(false);
+        }
+        #endregion
+
         #region ECOrder
         /// <summary>
         /// <para>异步调用 [POST] /channels/ec/order/search 接口。</para>
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOpen/ChannelsECOpenGetDownloadUrlRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOpen/ChannelsECOpenGetDownloadUrlRequest.cs
new file mode 100644
index 00000000..84fdb9c3
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOpen/ChannelsECOpenGetDownloadUrlRequest.cs
@@ -0,0 +1,22 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/open/get_download_url 接口的请求。</para>
+    /// </summary>
+    public class ChannelsECOpenGetDownloadUrlRequest : WechatApiRequest, IInferable<ChannelsECOpenGetDownloadUrlRequest, ChannelsECOpenGetDownloadUrlResponse>
+    {
+        /// <summary>
+        /// 获取或设置用户的 OpenId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("openid")]
+        [System.Text.Json.Serialization.JsonPropertyName("openid")]
+        public string OpenId { get; set; } = string.Empty;
+
+        /// <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/ECOpen/ChannelsECOpenGetDownloadUrlResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOpen/ChannelsECOpenGetDownloadUrlResponse.cs
new file mode 100644
index 00000000..339d00db
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOpen/ChannelsECOpenGetDownloadUrlResponse.cs
@@ -0,0 +1,22 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /channels/ec/open/get_download_url 接口的响应。</para>
+    /// </summary>
+    public class ChannelsECOpenGetDownloadUrlResponse : WechatApiResponse
+    {
+        /// <summary>
+        /// 获取或设置文件下载链接。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("download_url")]
+        [System.Text.Json.Serialization.JsonPropertyName("download_url")]
+        public string DownloadUrl { get; set; } = default!;
+
+        /// <summary>
+        /// 获取或设置链接到期时间戳。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("expire_time")]
+        [System.Text.Json.Serialization.JsonPropertyName("expire_time")]
+        public long ExpireTimestamp { get; set; }
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOpen/ChannelsECOpenGetDownloadUrlRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOpen/ChannelsECOpenGetDownloadUrlRequest.json
new file mode 100644
index 00000000..88ca08f2
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOpen/ChannelsECOpenGetDownloadUrlRequest.json
@@ -0,0 +1,4 @@
+{
+    "openid": "23982ADD2323",
+    "order_id": "239829312"
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOpen/ChannelsECOpenGetDownloadUrlResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOpen/ChannelsECOpenGetDownloadUrlResponse.json
new file mode 100644
index 00000000..a08ae4fd
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOpen/ChannelsECOpenGetDownloadUrlResponse.json
@@ -0,0 +1,6 @@
+{
+    "errcode": 0,
+    "errmsg": "成功",
+    "download_url": "https://cos.tencent.com/image/test.png",
+    "expire_time": 17823232312
+}