diff --git a/src/base/combination/combo.js b/src/base/combination/combo.js
index 70faf5d599..bed059725b 100644
--- a/src/base/combination/combo.js
+++ b/src/base/combination/combo.js
@@ -469,6 +469,7 @@ BI.Combo = BI.inherit(BI.Widget, {
     },
 
     showView: function (e) {
+        // 减少popup 调整宽高的次数
         if (this.isEnabled() && this.combo.isEnabled() && !this.isViewVisible()) {
             this._popupView(e);
         }