diff --git a/src/main/resources/com/finebi/plugin/web/plugin.screen_adaptive.js b/src/main/resources/com/finebi/plugin/web/plugin.screen_adaptive.js
index 0f04026..cb7596f 100644
--- a/src/main/resources/com/finebi/plugin/web/plugin.screen_adaptive.js
+++ b/src/main/resources/com/finebi/plugin/web/plugin.screen_adaptive.js
@@ -34,11 +34,11 @@
 
         if (bounds.height * bounds.scale < html.clientHeight) {
             transformY = (html.clientHeight - bounds.height * bounds.scale) / 2;
-            document.body.style.top = transformY + "px";
             html.style.overflowY = "hidden";
         } else {
             transformY = 0;
         }
+        document.body.style.top = transformY + "px";
 
 
         window.scale = window.devicePixelRatio * scale;
@@ -183,11 +183,11 @@
         removeListener(selectHandler);
     }
 
-    function selectHandler () {
+    var selectHandler = BI.debounce(function () {
         selected && prepareEnv();
         selected ? transformScale() : removeScale();
         !selected && restoreEnv();
-    }
+    }, 30);
 
     function updateScale () {
         if (html.getBoundingClientRect().width !== document.body.getBoundingClientRect().width) {
diff --git a/src/main/resources/com/finebi/plugin/web/scripts/entry.js b/src/main/resources/com/finebi/plugin/web/scripts/entry.js
index 0f04026..cb7596f 100644
--- a/src/main/resources/com/finebi/plugin/web/scripts/entry.js
+++ b/src/main/resources/com/finebi/plugin/web/scripts/entry.js
@@ -34,11 +34,11 @@
 
         if (bounds.height * bounds.scale < html.clientHeight) {
             transformY = (html.clientHeight - bounds.height * bounds.scale) / 2;
-            document.body.style.top = transformY + "px";
             html.style.overflowY = "hidden";
         } else {
             transformY = 0;
         }
+        document.body.style.top = transformY + "px";
 
 
         window.scale = window.devicePixelRatio * scale;
@@ -183,11 +183,11 @@
         removeListener(selectHandler);
     }
 
-    function selectHandler () {
+    var selectHandler = BI.debounce(function () {
         selected && prepareEnv();
         selected ? transformScale() : removeScale();
         !selected && restoreEnv();
-    }
+    }, 30);
 
     function updateScale () {
         if (html.getBoundingClientRect().width !== document.body.getBoundingClientRect().width) {