diff --git a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs
index f96fe12..67a708a 100644
--- a/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs
+++ b/Falcon.SugarApi/DatabaseDefinitions/SugarBasicTable2.cs
@@ -10,16 +10,16 @@ namespace Falcon.SugarApi.DatabaseDefinitions
     public abstract class SugarBasicTable2
     {
         /// <summary>
-        /// 主键
+        /// 主键 默认GUID 382c74c3-721d-4f34-80e5-57657b6cbc27
         /// </summary>
         [SugarColumn(IsPrimaryKey = true,ColumnDescription = "主键")]
-        public string Id { get; set; } = "";
+        [MaxLength(36)]
+        public string Id { get; set; } = Guid.NewGuid().ToString();
         /// <summary>
         /// 创建时间
         /// </summary>
         [Required]
         [SugarColumn(ColumnDescription = "创建时间")]
         public DateTime CreateTime { get; set; } = DateTime.Now;
-
     }
 }