diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/ChannelsECOrderSearchRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/ChannelsECOrderSearchRequest.cs
index a4c405b0..2887d3b6 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/ChannelsECOrderSearchRequest.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Models/Channels/ECOrder/ChannelsECOrderSearchRequest.cs
@@ -33,6 +33,7 @@
                 /// <summary>
                 /// 获取或设置收件人电话号码。
                 /// </summary>
+                [Obsolete("相关接口或字段于 2023-05-31 下线。")]
                 [Newtonsoft.Json.JsonProperty("tel_number")]
                 [System.Text.Json.Serialization.JsonPropertyName("tel_number")]
                 public string? TeleNumber { get; set; }
diff --git a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/ChannelsECOrderSearchRequest.json b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/ChannelsECOrderSearchRequest.json
index bda54657..7d02e435 100644
--- a/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/ChannelsECOrderSearchRequest.json
+++ b/test/SKIT.FlurlHttpClient.Wechat.Api.UnitTests/ModelSamples/Channels/ECOrder/ChannelsECOrderSearchRequest.json
@@ -1,9 +1,9 @@
-{
+{
     "search_condition": {
         "title": "标题关键字",
         "sku_code": "12321",
         "user_name": "张三",
-        "tel_number": "13700000000",
+        "tel_number_last4": "0000",
         "order_id": "3713218625342112768"
     },
     "on_aftersale_order_exist": 0,