diff --git a/src/form/switch.js b/src/form/switch.js
index 93c50fe..ea9f41d 100644
--- a/src/form/switch.js
+++ b/src/form/switch.js
@@ -77,42 +77,20 @@ class Switch extends Component {
 
     // 尺寸
     css`
-      @use 'sass:map';
-      @use 'sass:math';
-      $sizes: (
-        s: (
-          hd: 14px,
-          h: 20px,
-          f: 10px
-        ),
-        m: (
-          hd: 16px,
-          h: 24px,
-          f: 12px
-        ),
-        xl: (
-          hd: 20px,
-          h: 36px,
-          f: 14px
-        )
-      );
+      :host([size='small']) {
+        label {
+          height: 24px;
+          font-size: 12px;
+        }
 
-      @loop $s, $v in $sizes {
-        :host([size='#{$s}']) {
-          label {
-            height: map.get($v, 'h');
-            font-size: math.max(map.get($v, 'f'), 12px);
-          }
-
-          .switch {
-            min-width: map.get($v, 'hd') * 2 - 4;
-            height: map.get($v, 'hd');
-            padding: 0 #{math.div((map.get($v, 'hd') - map.get($v, 'f')), 2)};
-          }
-          .dot {
-            width: map.get($v, 'f');
-            height: map.get($v, 'f');
-          }
+        .switch {
+          min-width: 28px;
+          height: 16px;
+          padding: 0 2px;
+        }
+        .dot {
+          width: 12px;
+          height: 12px;
         }
       }
     `,