diff --git a/src/base/single/input/radio/radio.js b/src/base/single/input/radio/radio.js
index d842196ae..68c695277 100644
--- a/src/base/single/input/radio/radio.js
+++ b/src/base/single/input/radio/radio.js
@@ -9,10 +9,10 @@ BI.Radio = BI.inherit(BI.BasicButton, {
         baseCls: "bi-radio",
         selected: false,
         handler: BI.emptyFn,
-        width: 14,
-        height: 14,
-        iconWidth: 14,
-        iconHeight: 14,
+        width: 16,
+        height: 16,
+        iconWidth: 16,
+        iconHeight: 16,
     },
 
     render: function () {
diff --git a/src/less/base/single/input/radio.less b/src/less/base/single/input/radio.less
index 8e48818e7..0a3345e42 100644
--- a/src/less/base/single/input/radio.less
+++ b/src/less/base/single/input/radio.less
@@ -18,13 +18,13 @@
       border-color:  @color-bi-border-hover-active-radio;
       background-color: @color-bi-background-active-radio;
       &:after {
-        width: 6px;
-        height: 6px;
+        width: 8px;
+        height: 8px;
         display: table;
         position: absolute;
         top: 50%;
         left: 50%;
-        .border-radius(3px);
+        .border-radius(4px);
         background-color: @color-bi-background-active-radio-content;
         .transform(translate(-50%, -50%));
         @transition: all .1s cubic-bezier(.71,-.46,.88,.6),opacity .1s;