diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinOpenExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinOpenExtensions.cs
index f9a397ed..d0aea8ca 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinOpenExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientExecuteCgibinOpenExtensions.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
@@ -108,5 +108,25 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
 
             return await client.SendRequestWithJsonAsync<Models.CgibinOpenGetResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
         }
+
+        /// <summary>
+        /// <para>异步调用 [GET] /cgi-bin/open/sameentity 接口。</para>
+        /// <para>REF: https://developers.weixin.qq.com/doc/oplatform/openApi/OpenApiDoc/miniprogram-management/basic-info-management/getBindOpenAccountEntity.html </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinOpenSameEntityResponse> ExecuteCgibinOpenSameEntityAsync(this WechatApiClient client, Models.CgibinOpenSameEntityRequest 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.Get, "cgi-bin", "open", "sameentity")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinOpenSameEntityResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
     }
 }
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinOpen/CgibinOpenSameEntityRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinOpen/CgibinOpenSameEntityRequest.cs
new file mode 100644
index 00000000..3fabcec6
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinOpen/CgibinOpenSameEntityRequest.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [GET] /cgi-bin/open/sameentity 接口的请求。</para>
+    /// </summary>
+    public class CgibinOpenSameEntityRequest : WechatApiRequest, IInferable<CgibinOpenSameEntityRequest, CgibinOpenSameEntityResponse>
+    {
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinOpen/CgibinOpenSameEntityResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinOpen/CgibinOpenSameEntityResponse.cs
new file mode 100644
index 00000000..56a99520
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/CgibinOpen/CgibinOpenSameEntityResponse.cs
@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Api.Models
+{
+    /// <summary>
+    /// <para>表示 [GET] /cgi-bin/open/sameentity 接口的响应。</para>
+    /// </summary>
+    public class CgibinOpenSameEntityResponse : WechatApiResponse
+    {
+        /// <summary>
+        /// 获取或设置是否相同主体。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("same_entity")]
+        [System.Text.Json.Serialization.JsonPropertyName("same_entity")]
+        public bool IsSameEntity { get; set; }
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/CgibinOpen/CgibinOpenSameEntityResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/CgibinOpen/CgibinOpenSameEntityResponse.json
new file mode 100644
index 00000000..d7a8d73a
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/CgibinOpen/CgibinOpenSameEntityResponse.json
@@ -0,0 +1,5 @@
+{
+    "same_entity": false,
+    "errcode": 0,
+    "errmsg": "ok"
+}