diff --git a/src/base/foundation/message.js b/src/base/foundation/message.js
index 82b05e6a0..ef199900f 100644
--- a/src/base/foundation/message.js
+++ b/src/base/foundation/message.js
@@ -77,7 +77,6 @@ $.extend(BI, {
                         el: {
                             type: "bi.button",
                             text: BI.i18nText("BI-Basic_Cancel"),
-                            height: 30,
                             level: "ignore",
                             handler: function () {
                                 close();
@@ -92,7 +91,6 @@ $.extend(BI, {
                     el: {
                         type: "bi.button",
                         text: BI.i18nText("BI-Basic_OK"),
-                        height: 30,
                         handler: function () {
                             close();
                             if (BI.isFunction(callback)) {
diff --git a/src/base/layer/layer.popover.js b/src/base/layer/layer.popover.js
index cbbc64b19..18f13d2cf 100644
--- a/src/base/layer/layer.popover.js
+++ b/src/base/layer/layer.popover.js
@@ -9,7 +9,8 @@ BI.Popover = BI.inherit(BI.Widget, {
             SMALL: "small",
             NORMAL: "normal",
             BIG: "big"
-        }
+        },
+        HEADER_HEIGHT: 40
     },
 
     _defaultConfig: function () {
@@ -56,7 +57,7 @@ BI.Popover = BI.inherit(BI.Widget, {
                                 items: [{
                                     el: BI.isPlainObject(o.header) ? BI.createWidget(o.header) : {
                                         type: "bi.label",
-                                        height: 36,
+                                        height: this._constant.HEADER_HEIGHT,
                                         text: o.header,
                                         title: o.header,
                                         textAlign: "left"
@@ -72,7 +73,7 @@ BI.Popover = BI.inherit(BI.Widget, {
                             el: {
                                 type: "bi.icon_button",
                                 cls: "bi-message-close close-font",
-                                height: 36,
+                                height: this._constant.HEADER_HEIGHT,
                                 handler: function () {
                                     self.close();
                                 }
@@ -81,7 +82,7 @@ BI.Popover = BI.inherit(BI.Widget, {
                         }
                     }
                 },
-                height: 36
+                height: this._constant.HEADER_HEIGHT
             },
             center: {
                 el: {
diff --git a/src/css/base/foundation/bi.css b/src/css/base/foundation/bi.css
index ed7cdec87..fb0c4433f 100644
--- a/src/css/base/foundation/bi.css
+++ b/src/css/base/foundation/bi.css
@@ -1,5 +1,5 @@
 .bi-message-title {
-  font-size: 16px;
+  font-size: 14px;
   cursor: pointer;
 }
 .bi-message-text {
@@ -15,7 +15,7 @@
   font-size: 16px;
 }
 .bi-message-close {
-  font-size: 25px;
+  font-size: 16px;
 }
 .bi-message-animate {
   -webkit-transition: opacity 0.3s, transform 0.4s, -webkit-transform 0.4s;
diff --git a/src/less/base/foundation/bi.message.less b/src/less/base/foundation/bi.message.less
index 53692cbe1..5da4a752c 100644
--- a/src/less/base/foundation/bi.message.less
+++ b/src/less/base/foundation/bi.message.less
@@ -1,7 +1,7 @@
 @import "../../index";
 
 .bi-message-title {
-  font-size: 16px;
+  font-size: 14px;
   cursor: pointer;
 }
 
@@ -15,7 +15,7 @@
 }
 
 .bi-message-close {
-  font-size: 25px;
+  font-size: 16px;
 }
 
 .bi-message-animate {