diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinCorpGroupExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinCorpGroupExtensions.cs
index d908ba9f..5b254e9b 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinCorpGroupExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Extensions/WechatWorkClientExecuteCgibinCorpGroupExtensions.cs
@@ -52,5 +52,92 @@ namespace SKIT.FlurlHttpClient.Wechat.Work
 
             return await client.SendRequestWithJsonAsync<Models.CgibinCorpGroupCropGetTokenResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
         }
+
+        /// <summary>
+        /// <para>异步调用 [GET] /cgi-bin/corpgroup/corp/get_chain_list 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/95315 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinCorpGroupCropGetChainListResponse> ExecuteCgibinCorpGroupCropGetChainListAsync(this WechatWorkClient client, Models.CgibinCorpGroupCropGetChainListRequest 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", "corpgroup", "corp", "get_chain_list")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinCorpGroupCropGetChainListResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /cgi-bin/corpgroup/corp/get_chain_group 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/95315 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinCorpGroupCropGetChainGroupResponse> ExecuteCgibinCorpGroupCropGetChainGroupAsync(this WechatWorkClient client, Models.CgibinCorpGroupCropGetChainGroupRequest 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", "corpgroup", "corp", "get_chain_group")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinCorpGroupCropGetChainGroupResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [GET] /cgi-bin/corpgroup/corp/get_chain_corpinfo_list 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/95315 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinCorpGroupCropGetChainCorpInfoListResponse> ExecuteCgibinCorpGroupCropGetChainCorpInfoListAsync(this WechatWorkClient client, Models.CgibinCorpGroupCropGetChainCorpInfoListRequest 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", "corpgroup", "corp", "get_chain_corpinfo_list")
+                .SetQueryParam("access_token", request.AccessToken)
+                .SetQueryParam("chain_id", request.ChainId);
+
+            if (request.GroupId != null)
+                flurlReq.SetQueryParam("groupid", request.GroupId.Value);
+
+            if (request.RequireFetchChild != null)
+                flurlReq.SetQueryParam("fetch_child", request.RequireFetchChild.Value ? 1 : 0);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinCorpGroupCropGetChainCorpInfoListResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
+
+        /// <summary>
+        /// <para>异步调用 [POST] /cgi-bin/corpgroup/unionid_to_external_userid 接口。</para>
+        /// <para>REF: https://developer.work.weixin.qq.com/document/path/95342 </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="request"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public static async Task<Models.CgibinCorpGroupUnionidToExternalUserIdResponse> ExecuteCgibinCorpGroupUnionidToExternalUserIdAsync(this WechatWorkClient client, Models.CgibinCorpGroupUnionidToExternalUserIdRequest 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", "corpgroup", "unionid_to_external_userid")
+                .SetQueryParam("access_token", request.AccessToken);
+
+            return await client.SendRequestWithJsonAsync<Models.CgibinCorpGroupUnionidToExternalUserIdResponse>(flurlReq, data: request, cancellationToken: cancellationToken);
+        }
     }
 }
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListRequest.cs
new file mode 100644
index 00000000..f057da3f
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListRequest.cs
@@ -0,0 +1,29 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [GET] /cgi-bin/corpgroup/corp/get_chain_corpinfo_list 接口的请求。</para>
+    /// </summary>
+    public class CgibinCorpGroupCropGetChainCorpInfoListRequest : WechatWorkRequest
+    {
+        /// <summary>
+        /// 获取或设置上下游 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonIgnore]
+        [System.Text.Json.Serialization.JsonIgnore]
+        public string ChainId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// 获取或设置分组 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonIgnore]
+        [System.Text.Json.Serialization.JsonIgnore]
+        public int? GroupId { get; set; }
+
+        /// <summary>
+        /// 获取或设置是否递归获取子分组企业。
+        /// </summary>
+        [Newtonsoft.Json.JsonIgnore]
+        [System.Text.Json.Serialization.JsonIgnore]
+        public bool? RequireFetchChild { get; set; }
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListResponse.cs
new file mode 100644
index 00000000..a98967b2
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListResponse.cs
@@ -0,0 +1,49 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [GET] /cgi-bin/corpgroup/corp/get_chain_corpinfo_list 接口的响应。</para>
+    /// </summary>
+    public class CgibinCorpGroupCropGetChainCorpInfoListResponse : WechatWorkResponse
+    {
+        public static class Types
+        {
+            public class GroupCorp
+            {
+                /// <summary>
+                /// 获取或设置分组 ID。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("groupid")]
+                [System.Text.Json.Serialization.JsonPropertyName("groupid")]
+                public int GroupId { get; set; }
+
+                /// <summary>
+                /// 获取或设置企业 CorpId。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("corpid")]
+                [System.Text.Json.Serialization.JsonPropertyName("corpid")]
+                public string CorpId { get; set; } = default!;
+
+                /// <summary>
+                /// 获取或设置企业名称。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("corp_name")]
+                [System.Text.Json.Serialization.JsonPropertyName("corp_name")]
+                public string CorpName { get; set; } = default!;
+
+                /// <summary>
+                /// 获取或设置自定义 ID。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("custom_id")]
+                [System.Text.Json.Serialization.JsonPropertyName("custom_id")]
+                public string? CustomId { get; set; }
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置企业上下游通讯录分组下的企业详情列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("group_corps")]
+        [System.Text.Json.Serialization.JsonPropertyName("group_corps")]
+        public Types.GroupCorp[] GroupCorpList { get; set; } = default!;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupRequest.cs
new file mode 100644
index 00000000..d01b054d
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupRequest.cs
@@ -0,0 +1,15 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/corpgroup/corp/get_chain_group 接口的请求。</para>
+    /// </summary>
+    public class CgibinCorpGroupCropGetChainGroupRequest : WechatWorkRequest
+    {
+        /// <summary>
+        /// 获取或设置上下游 ID。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("chain_id")]
+        [System.Text.Json.Serialization.JsonPropertyName("chain_id")]
+        public string ChainId { get; set; } = string.Empty;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupResponse.cs
new file mode 100644
index 00000000..738134b0
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupResponse.cs
@@ -0,0 +1,49 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/corpgroup/corp/get_chain_group 接口的响应。</para>
+    /// </summary>
+    public class CgibinCorpGroupCropGetChainGroupResponse : WechatWorkResponse
+    {
+        public static class Types
+        {
+            public class Group
+            {
+                /// <summary>
+                /// 获取或设置分组 ID。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("groupid")]
+                [System.Text.Json.Serialization.JsonPropertyName("groupid")]
+                public int GroupId { get; set; }
+
+                /// <summary>
+                /// 获取或设置分组名称。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("group_name")]
+                [System.Text.Json.Serialization.JsonPropertyName("group_name")]
+                public string GroupName { get; set; } = default!;
+
+                /// <summary>
+                /// 获取或设置上级分组名称。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("parentid")]
+                [System.Text.Json.Serialization.JsonPropertyName("parentid")]
+                public int ParentGroupId { get; set; }
+
+                /// <summary>
+                /// 获取或设置在上级分组中的次序值。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("order")]
+                [System.Text.Json.Serialization.JsonPropertyName("order")]
+                public long GroupOrder { get; set; }
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置企业上下游通讯录分组列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("groups")]
+        [System.Text.Json.Serialization.JsonPropertyName("groups")]
+        public Types.Group[] GroupList { get; set; } = default!;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainListRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainListRequest.cs
new file mode 100644
index 00000000..72dc37be
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainListRequest.cs
@@ -0,0 +1,9 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [GET] /cgi-bin/corpgroup/corp/get_chain_list 接口的请求。</para>
+    /// </summary>
+    public class CgibinCorpGroupCropGetChainListRequest : WechatWorkRequest
+    {
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainListResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainListResponse.cs
new file mode 100644
index 00000000..04d9cd77
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupCropGetChainListResponse.cs
@@ -0,0 +1,35 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [GET] /cgi-bin/corpgroup/corp/get_chain_list 接口的响应。</para>
+    /// </summary>
+    public class CgibinCorpGroupCropGetChainListResponse : WechatWorkResponse
+    {
+        public static class Types
+        {
+            public class Chain
+            {
+                /// <summary>
+                /// 获取或设置上下游 ID。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("chain_id")]
+                [System.Text.Json.Serialization.JsonPropertyName("chain_id")]
+                public string ChainId { get; set; } = default!;
+
+                /// <summary>
+                /// 获取或设置上下游名称。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("chain_name")]
+                [System.Text.Json.Serialization.JsonPropertyName("chain_name")]
+                public string ChainName { get; set; } = default!;
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置企业上下游列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("chains")]
+        [System.Text.Json.Serialization.JsonPropertyName("chains")]
+        public Types.Chain[] ChainList { get; set; } = default!;
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdRequest.cs
new file mode 100644
index 00000000..36063863
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdRequest.cs
@@ -0,0 +1,29 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/corpgroup/unionid_to_external_userid 接口的请求。</para>
+    /// </summary>
+    public class CgibinCorpGroupUnionidToExternalUserIdRequest : WechatWorkRequest
+    {
+        /// <summary>
+        /// 获取或设置用户 UnionId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("unionid")]
+        [System.Text.Json.Serialization.JsonPropertyName("unionid")]
+        public string? UnionId { get; set; }
+
+        /// <summary>
+        /// 获取或设置用户 OpenId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("openid")]
+        [System.Text.Json.Serialization.JsonPropertyName("openid")]
+        public string? OpenId { get; set; }
+
+        /// <summary>
+        /// 获取或设置需要换取的企业 CorpId。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("corpid")]
+        [System.Text.Json.Serialization.JsonPropertyName("corpid")]
+        public string? CorpId { get; set; }
+    }
+}
diff --git a/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdResponse.cs b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdResponse.cs
new file mode 100644
index 00000000..e327a5cb
--- /dev/null
+++ b/src/SKIT.FlurlHttpClient.Wechat.Work/Models/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdResponse.cs
@@ -0,0 +1,35 @@
+namespace SKIT.FlurlHttpClient.Wechat.Work.Models
+{
+    /// <summary>
+    /// <para>表示 [POST] /cgi-bin/corpgroup/unionid_to_external_userid 接口的响应。</para>
+    /// </summary>
+    public class CgibinCorpGroupUnionidToExternalUserIdResponse : WechatWorkResponse
+    {
+        public static class Types
+        {
+            public class ExternalUser
+            {
+                /// <summary>
+                /// 获取或设置企业 CorpId。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("corpid")]
+                [System.Text.Json.Serialization.JsonPropertyName("corpid")]
+                public string CorpId { get; set; } = default!;
+
+                /// <summary>
+                /// 获取或设置外部联系人账号。
+                /// </summary>
+                [Newtonsoft.Json.JsonProperty("external_userid")]
+                [System.Text.Json.Serialization.JsonPropertyName("external_userid")]
+                public string ExternalUserId { get; set; } = default!;
+            }
+        }
+
+        /// <summary>
+        /// 获取或设置外部联系人列表。
+        /// </summary>
+        [Newtonsoft.Json.JsonProperty("external_userid_info")]
+        [System.Text.Json.Serialization.JsonPropertyName("external_userid_info")]
+        public Types.ExternalUser[] ExternalUserList { get; set; } = default!;
+    }
+}
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListResponse.json
new file mode 100644
index 00000000..fbe6bebc
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainCorpInfoListResponse.json
@@ -0,0 +1,12 @@
+{
+    "errcode": 0,
+    "errmsg": "ok",
+    "group_corps": [
+        {
+            "groupid": 2,
+            "corpid": "wwxxxx",
+            "corp_name": "美馨粮油公司",
+            "custom_id": "wof3du51quo5sl1is"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupRequest.json
new file mode 100644
index 00000000..27f6648a
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupRequest.json
@@ -0,0 +1,3 @@
+{
+    "chain_id": "Chxxxxxx"
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupResponse.json
new file mode 100644
index 00000000..2e0a1ddc
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainGroupResponse.json
@@ -0,0 +1,18 @@
+{
+    "errcode": 0,
+    "errmsg": "ok",
+    "groups": [
+        {
+            "groupid": 2,
+            "group_name": "一级经销商",
+            "parentid": 1,
+            "order": 1
+        },
+        {
+            "groupid": 3,
+            "group_name": "二级经销商",
+            "parentid": 2,
+            "order": 3
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainListResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainListResponse.json
new file mode 100644
index 00000000..28f6d465
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupCropGetChainListResponse.json
@@ -0,0 +1,14 @@
+{
+    "errcode": 0,
+    "errmsg": "ok",
+    "chains": [
+        {
+            "chain_id": "chainid1",
+            "chain_name": "能源供应链"
+        },
+        {
+            "chain_id": "chainid2",
+            "chain_name": "原材料供应链"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdRequest.json
new file mode 100644
index 00000000..a303a938
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdRequest.json
@@ -0,0 +1,5 @@
+{
+    "unionid": "xxxxx",
+    "openid": "xxxxx",
+    "corpid": "xxxxx"
+}
\ No newline at end of file
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdResponse.json b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdResponse.json
new file mode 100644
index 00000000..86f68139
--- /dev/null
+++ b/test/SKIT.FlurlHttpClient.Wechat.Work.UnitTests/ModelSamples/CgibinCorpGroup/CgibinCorpGroupUnionidToExternalUserIdResponse.json
@@ -0,0 +1,14 @@
+{
+    "errcode": 0,
+    "errmsg": "ok",
+    "external_userid_info": [
+        {
+            "corpid": "AAAAA",
+            "external_userid": "BBBB"
+        },
+        {
+            "corpid": "CCCCC",
+            "external_userid": "DDDDD"
+        }
+    ]
+}
\ No newline at end of file