diff --git a/B3WeChat.Web/PluginClass.cs b/B3WeChat.Web/PluginClass.cs
index 5f2bb27..7b489a4 100644
--- a/B3WeChat.Web/PluginClass.cs
+++ b/B3WeChat.Web/PluginClass.cs
@@ -1,6 +1,7 @@
 using Bwp.MainSystem;
 using Bwp.MainSystem.Auth;
 using Bwp.Web.Pages;
+using BWP.B3WeChat.Tasks;
 using BWP.B3WeChat.Utils;
 using Forks.EnterpriseServices.BusinessInterfaces;
 using Forks.Utils;
@@ -45,6 +46,7 @@ namespace BWP.Web
       var roleSchemas = Wpf.Settings.RoleSchemas;
       roleSchemas.Add(new RoleSchema("wechat", "微信公众号用户", RoleSchema.DefaultFunctions.Empty));
       Global.RegisterCustomPrePam(new WeChatAuth());
+      ClearExpiredApproveMessagesTask.Register();
     }
   }
 }
diff --git a/B3WeChat/B3WeChat.csproj b/B3WeChat/B3WeChat.csproj
index 8ec4ada..cb448e3 100644
--- a/B3WeChat/B3WeChat.csproj
+++ b/B3WeChat/B3WeChat.csproj
@@ -132,6 +132,7 @@
     <Compile Include="Rpcs\ApproveMessageRpc.cs" />
     <Compile Include="Rpcs\ClientRpc.cs" />
     <Compile Include="Rpcs\WeChatUserRpc.cs" />
+    <Compile Include="Tasks\ClearExpiredApproveMessagesTask.cs" />
     <Compile Include="Utils\InOutMessageUtil.cs" />
     <Compile Include="Utils\SendMessageUtil.cs" />
     <Compile Include="Utils\WeChatPageUtil.cs" />
diff --git a/B3WeChat/Tasks/ClearExpiredApproveMessagesTask.cs b/B3WeChat/Tasks/ClearExpiredApproveMessagesTask.cs
new file mode 100644
index 0000000..e334906
--- /dev/null
+++ b/B3WeChat/Tasks/ClearExpiredApproveMessagesTask.cs
@@ -0,0 +1,40 @@
+using BWP.B3WeChat.BO;
+using Forks.EnterpriseServices.DomainObjects2.DQuery;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using TSingSoft.WebPluginFramework;
+using TSingSoft.WebPluginFramework.TimerTasks;
+using TSingSoft.WebPluginFramework;
+namespace BWP.B3WeChat.Tasks
+{
+  public class ClearExpiredApproveMessagesTask
+  {
+    public static void Register()
+    {
+      TimerConfig.Register("0 3 * * *", new Task1());
+    }
+
+#if DEBUG
+    public
+#endif
+    class Task1 : ITimerTask
+    {
+      public void Execute()
+      {
+        var del = new DQDeleteDom(typeof(ApproveMessage));
+        del.Where.Conditions.Add(DQCondition.LessThan("CreateTime", BLContext.Today.AddDays(-7)));
+        del.EExecute();
+      }
+
+      public string Name
+      {
+        get { return "清理过期的审批消息(7天前)"; }
+      }
+    }
+
+
+
+  }
+}