diff --git a/src/case/combo/bubblecombo/combo.bubble.js b/src/case/combo/bubblecombo/combo.bubble.js
index dd77173f3..5cedb9b5d 100644
--- a/src/case/combo/bubblecombo/combo.bubble.js
+++ b/src/case/combo/bubblecombo/combo.bubble.js
@@ -54,8 +54,10 @@ BI.BubbleCombo = BI.inherit(BI.Widget, {
             offsetStyle: o.offsetStyle,
             el: o.el,
             popup: BI.extend({
-                type: "bi.bubble_popup_view"
-            }, o.popup)
+                type: "bi.bubble_popup_view",
+            }, o.popup, {
+                cls: (o.popup.cls || "") + " bi-zoom-big-enter bi-zoom-big-enter-active"
+            })
         });
         this.combo.on(BI.Combo.EVENT_TRIGGER_CHANGE, function () {
             self.fireEvent(BI.BubbleCombo.EVENT_TRIGGER_CHANGE, arguments);
diff --git a/src/case/combo/bubblecombo/popup.bubble.js b/src/case/combo/bubblecombo/popup.bubble.js
index 7eb70b26d..68804bc5b 100644
--- a/src/case/combo/bubblecombo/popup.bubble.js
+++ b/src/case/combo/bubblecombo/popup.bubble.js
@@ -8,7 +8,7 @@ BI.BubblePopupView = BI.inherit(BI.PopupView, {
     _defaultConfig: function () {
         var config = BI.BubblePopupView.superclass._defaultConfig.apply(this, arguments);
         return BI.extend(config, {
-            baseCls: config.baseCls + " bi-bubble-popup-view bi-zoom-big-enter bi-zoom-big-enter-active",
+            baseCls: config.baseCls + " bi-bubble-popup-view",
             minWidth: 220,
             maxWidth: 300,
             minHeight: 90