diff --git a/src/Khd.Core.Domain/Models/WcsTask.cs b/src/Khd.Core.Domain/Models/WcsTask.cs
index 67a6d32..81a1e9a 100644
--- a/src/Khd.Core.Domain/Models/WcsTask.cs
+++ b/src/Khd.Core.Domain/Models/WcsTask.cs
@@ -20,7 +20,7 @@ namespace  Khd.Core.Domain.Models
        
         [Key]
 		[Column("objid")]
-	    public Guid objid { get; set; }
+	    public long objid { get; set; }
     
         /// <summary>
         /// 流水号