diff --git a/src/Shentun.ColumnReferencePlugIns/PlugInsBase.cs b/src/Shentun.ColumnReferencePlugIns/PlugInsBase.cs
index 383a561..ae6b8cd 100644
--- a/src/Shentun.ColumnReferencePlugIns/PlugInsBase.cs
+++ b/src/Shentun.ColumnReferencePlugIns/PlugInsBase.cs
@@ -25,7 +25,7 @@ namespace Shentun.Peis.PlugIns
         protected IConfiguration InterfaceConfig;
         protected string? AppConnctionStr;
         private string _appBaseAddress;
-        private string _accesToken;
+        private static string _accesToken;
         protected string? SelfUser;
         protected string? SelfPassword;