diff --git a/js/sakura-app.js b/js/sakura-app.js
index 4b8b424..34930ce 100644
--- a/js/sakura-app.js
+++ b/js/sakura-app.js
@@ -1407,9 +1407,14 @@ var home = location.href,
                     $('#bgvideo').css({
                         'min-height': _height
                     });
+                    window.resizeFlag= null;
                     $(window).resize(function () {
-                        Siren.AH();
-                    });
+                        //直接resize性能爆炸，改成延时
+                        if(resizeFlag!=null){
+                            clearTimeout(resizeFlag);
+                        }
+                        resizeFlag = setTimeout(function(){ Siren.AH();resizeFlag=null }, 1000);
+                    })
                 }
             } else {
                 $('.headertop').addClass('headertop-bar');
@@ -1811,4 +1816,4 @@ if ((isWebkit || isOpera || isIe) && document.getElementById && window.addEventL
             element.focus();
         }
     }, false);
-}
\ No newline at end of file
+}