diff --git a/YD_Event.Core/Entities/EventRegistrationPerson.cs b/YD_Event.Core/Entities/EventRegistrationPerson.cs
index 7ade812..0200dad 100644
--- a/YD_Event.Core/Entities/EventRegistrationPerson.cs
+++ b/YD_Event.Core/Entities/EventRegistrationPerson.cs
@@ -60,7 +60,7 @@ public class EventRegistrationPerson : Entity<long>, ISoftDelete, ICreatedUserId
     /// <summary>
     /// 身份证号
     /// </summary>
-    [SugarColumn(Length = 18)]
+    [SugarColumn(Length = 20)]
     public string IdCard { get; set; }
 
     /// <summary>