diff --git a/packages/vant/src/switch/README.md b/packages/vant/src/switch/README.md
index 3bbd1b5bc..abf7394ae 100644
--- a/packages/vant/src/switch/README.md
+++ b/packages/vant/src/switch/README.md
@@ -138,7 +138,7 @@ The component provides the following CSS variables, which can be used to customi
 | Name | Default Value | Description |
 | --- | --- | --- |
 | --van-switch-size | _26px_ | - |
-| --van-switch-width | _calc(2em + 4px)_ | - |
+| --van-switch-width | _calc(1.8em + 4px)_ | - |
 | --van-switch-height | _calc(1em + 4px)_ | - |
 | --van-switch-node-size | _1em_ | - |
 | --van-switch-node-background | _var(--van-white)_ | - |
diff --git a/packages/vant/src/switch/README.zh-CN.md b/packages/vant/src/switch/README.zh-CN.md
index 5297d27a8..4990baa1a 100644
--- a/packages/vant/src/switch/README.zh-CN.md
+++ b/packages/vant/src/switch/README.zh-CN.md
@@ -150,7 +150,7 @@ import type { SwitchProps } from 'vant';
 | 名称                          | 默认值                            | 描述 |
 | ----------------------------- | --------------------------------- | ---- |
 | --van-switch-size             | _26px_                            | -    |
-| --van-switch-width            | _calc(2em + 4px)_                 | -    |
+| --van-switch-width            | _calc(1.8em + 4px)_               | -    |
 | --van-switch-height           | _calc(1em + 4px)_                 | -    |
 | --van-switch-node-size        | _1em_                             | -    |
 | --van-switch-node-background  | _var(--van-white)_                | -    |
diff --git a/packages/vant/src/switch/index.less b/packages/vant/src/switch/index.less
index 6b20e9813..140d729a5 100644
--- a/packages/vant/src/switch/index.less
+++ b/packages/vant/src/switch/index.less
@@ -1,6 +1,6 @@
 body {
   --van-switch-size: 26px;
-  --van-switch-width: calc(2em + 4px);
+  --van-switch-width: calc(1.8em + 4px);
   --van-switch-height: calc(1em + 4px);
   --van-switch-node-size: 1em;
   --van-switch-node-background: var(--van-white);