diff --git a/aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Approvals/Models/ApprovalControlValue.cs b/aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Approvals/Models/ApprovalControlValue.cs
index d324b950e..455f21acf 100644
--- a/aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Approvals/Models/ApprovalControlValue.cs
+++ b/aspnet-core/framework/wechat/LINGYUN.Abp.WeChat.Work/LINGYUN/Abp/WeChat/Work/Approvals/Models/ApprovalControlValue.cs
@@ -61,7 +61,7 @@ public class ApprovalControlValue
     /// <summary>
     /// 选择内容
     /// </summary>
-    [NotNull]
+    [CanBeNull]
     [JsonProperty("selector")]
     [JsonPropertyName("selector")]
     public SelectorControlValue Selector { get; set; }