diff --git a/WebContent/Frame/page/jspf/include/jsp_sqlca_head.jspf b/WebContent/Frame/page/jspf/include/jsp_sqlca_head.jspf
index 83c1f4000..312735bd4 100644
--- a/WebContent/Frame/page/jspf/include/jsp_sqlca_head.jspf
+++ b/WebContent/Frame/page/jspf/include/jsp_sqlca_head.jspf
@@ -1,4 +1,4 @@
-<%  
+<%@page import="com.amarsoft.awe.control.PageConstants"%><%  
 Transaction Sqlca = null;
 Transaction SqlcaRepository = null;
 String sCurRunMode=CurConfig.getConfigure("RunMode");
@@ -7,6 +7,12 @@ try{
     Sqlca = Transaction.createTransaction(sDataSource);
     SqlcaRepository = Sqlca;
     ComponentSession CurCompSession = CurARC.getCompSession();
+    //checkSingleSignon
+    String sessionId = session.getId();
+    String endtime = Sqlca.getString("select endtime from user_list where sessionid='"+sessionId+"'");
+	if(null != endtime){
+		response.sendRedirect(request.getContextPath() + PageConstants.SESSION_EXPIRE_PAGE);
+	}
     Component CurComp = CurCompSession.lookUp(sCompClientID);
     Page CurPage = new Page(CurComp);
     CurPage.setUser(CurUser);