diff --git a/src/base/single/input/radio/radio.js b/src/base/single/input/radio/radio.js
index 6cf5e3635..61096af65 100644
--- a/src/base/single/input/radio/radio.js
+++ b/src/base/single/input/radio/radio.js
@@ -9,8 +9,8 @@ BI.Radio = BI.inherit(BI.BasicButton, {
         baseCls: "bi-radio",
         selected: false,
         handler: BI.emptyFn,
-        width: 16,
-        height: 16,
+        width: 14,
+        height: 14,
         iconWidth: 14,
         iconHeight: 14
     },
@@ -59,4 +59,4 @@ BI.Radio = BI.inherit(BI.BasicButton, {
 });
 BI.Radio.EVENT_CHANGE = "EVENT_CHANGE";
 
-BI.shortcut("bi.radio", BI.Radio);
\ No newline at end of file
+BI.shortcut("bi.radio", BI.Radio);
diff --git a/src/less/base/single/input/radio.less b/src/less/base/single/input/radio.less
index 334ea42ca..2e2cda48a 100644
--- a/src/less/base/single/input/radio.less
+++ b/src/less/base/single/input/radio.less
@@ -4,6 +4,7 @@
   & .radio-content, &.radio-content {
     .border-radius(8px);
     border: 1px solid @color-bi-border-dark-line;
+    .box-sizing(border-box);
     &:after {
       content: "";
     }
@@ -74,4 +75,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}