diff --git a/components/layout/Sider.tsx b/components/layout/Sider.tsx
index 3a015f2b5c..669450e3dd 100644
--- a/components/layout/Sider.tsx
+++ b/components/layout/Sider.tsx
@@ -1,14 +1,14 @@
+import * as React from 'react';
+import { useContext, useEffect, useRef, useState } from 'react';
 import BarsOutlined from '@ant-design/icons/BarsOutlined';
 import LeftOutlined from '@ant-design/icons/LeftOutlined';
 import RightOutlined from '@ant-design/icons/RightOutlined';
 import classNames from 'classnames';
 import omit from 'rc-util/lib/omit';
-import * as React from 'react';
-import { useContext, useEffect, useRef, useState } from 'react';
 
 import isNumeric from '../_util/isNumeric';
 import { ConfigContext } from '../config-provider';
-import { LayoutContext } from './layout';
+import { LayoutContext } from './context';
 
 const dimensionMaxMap = {
   xs: '479.98px',
diff --git a/components/layout/__tests__/__snapshots__/demo.test.ts.snap b/components/layout/__tests__/__snapshots__/demo.test.ts.snap
index 0f1323d240..75d0807d75 100644
--- a/components/layout/__tests__/__snapshots__/demo.test.ts.snap
+++ b/components/layout/__tests__/__snapshots__/demo.test.ts.snap
@@ -115,7 +115,7 @@ exports[`renders components/layout/demo/basic.tsx correctly 1`] = `
     class="ant-space-item"
   >
     <div
-      class="ant-layout"
+      class="ant-layout ant-layout-has-sider"
     >
       <aside
         class="ant-layout-sider ant-layout-sider-dark"
@@ -172,7 +172,7 @@ exports[`renders components/layout/demo/component-token.tsx correctly 1`] = `
     </div>
   </header>
   <div
-    class="ant-layout"
+    class="ant-layout ant-layout-has-sider"
   >
     <aside
       class="ant-layout-sider ant-layout-sider-dark"
@@ -429,7 +429,7 @@ exports[`renders components/layout/demo/component-token.tsx correctly 1`] = `
 
 exports[`renders components/layout/demo/custom-trigger.tsx correctly 1`] = `
 <div
-  class="ant-layout"
+  class="ant-layout ant-layout-has-sider"
 >
   <aside
     class="ant-layout-sider ant-layout-sider-dark"
@@ -1256,7 +1256,7 @@ exports[`renders components/layout/demo/fixed-sider.tsx correctly 1`] = `
 
 exports[`renders components/layout/demo/responsive.tsx correctly 1`] = `
 <div
-  class="ant-layout"
+  class="ant-layout ant-layout-has-sider"
 >
   <aside
     class="ant-layout-sider ant-layout-sider-dark"
@@ -1434,7 +1434,7 @@ exports[`renders components/layout/demo/responsive.tsx correctly 1`] = `
 
 exports[`renders components/layout/demo/side.tsx correctly 1`] = `
 <div
-  class="ant-layout"
+  class="ant-layout ant-layout-has-sider"
   style="min-height:100vh"
 >
   <aside
@@ -2154,7 +2154,7 @@ exports[`renders components/layout/demo/top-side.tsx correctly 1`] = `
       </ol>
     </nav>
     <div
-      class="ant-layout"
+      class="ant-layout ant-layout-has-sider"
       style="padding:24px 0;background:#ffffff"
     >
       <aside
@@ -2469,7 +2469,7 @@ exports[`renders components/layout/demo/top-side-2.tsx correctly 1`] = `
     />
   </header>
   <div
-    class="ant-layout"
+    class="ant-layout ant-layout-has-sider"
   >
     <aside
       class="ant-layout-sider ant-layout-sider-dark"
diff --git a/components/layout/__tests__/index.test.tsx b/components/layout/__tests__/index.test.tsx
index 42ab520bc3..473f97bbf8 100644
--- a/components/layout/__tests__/index.test.tsx
+++ b/components/layout/__tests__/index.test.tsx
@@ -1,6 +1,8 @@
-import { UserOutlined } from '@ant-design/icons';
 import React, { useState } from 'react';
+import { UserOutlined } from '@ant-design/icons';
+import { renderToString } from 'react-dom/server';
 import { act } from 'react-dom/test-utils';
+
 import Layout from '..';
 import mountTest from '../../../tests/shared/mountTest';
 import rtlTest from '../../../tests/shared/rtlTest';
@@ -332,4 +334,16 @@ describe('Sider', () => {
       expect(ref.current instanceof HTMLElement).toBe(true);
     });
   });
+
+  it('auto check hasSider', () => {
+    const htmlContent = renderToString(
+      <Layout>
+        <div />
+        <Sider />
+        <div />
+      </Layout>,
+    );
+
+    expect(htmlContent).toContain('ant-layout-has-sider');
+  });
 });
diff --git a/components/layout/context.ts b/components/layout/context.ts
new file mode 100644
index 0000000000..5ef4913c9f
--- /dev/null
+++ b/components/layout/context.ts
@@ -0,0 +1,15 @@
+import * as React from 'react';
+
+export interface LayoutContextProps {
+  siderHook: {
+    addSider: (id: string) => void;
+    removeSider: (id: string) => void;
+  };
+}
+
+export const LayoutContext = React.createContext<LayoutContextProps>({
+  siderHook: {
+    addSider: () => null,
+    removeSider: () => null,
+  },
+});
diff --git a/components/layout/hooks/useHasSider.ts b/components/layout/hooks/useHasSider.ts
new file mode 100644
index 0000000000..d85c2967c4
--- /dev/null
+++ b/components/layout/hooks/useHasSider.ts
@@ -0,0 +1,22 @@
+import type * as React from 'react';
+import toArray from 'rc-util/lib/Children/toArray';
+
+import Sider from '../Sider';
+
+export default function useHasSider(
+  siders: string[],
+  children?: React.ReactNode,
+  hasSider?: boolean,
+) {
+  if (typeof hasSider === 'boolean') {
+    return hasSider;
+  }
+
+  if (siders.length) {
+    return true;
+  }
+
+  const childNodes = toArray(children);
+
+  return childNodes.some((node) => node.type === Sider);
+}
diff --git a/components/layout/layout.tsx b/components/layout/layout.tsx
index dabbb2cf0f..243fee086e 100644
--- a/components/layout/layout.tsx
+++ b/components/layout/layout.tsx
@@ -1,7 +1,10 @@
+import * as React from 'react';
 import classNames from 'classnames';
 import omit from 'rc-util/lib/omit';
-import * as React from 'react';
+
 import { ConfigContext } from '../config-provider';
+import { LayoutContext } from './context';
+import useHasSider from './hooks/useHasSider';
 import useStyle from './style';
 
 export interface GeneratorProps {
@@ -16,19 +19,6 @@ export interface BasicProps extends React.HTMLAttributes<HTMLDivElement> {
   hasSider?: boolean;
 }
 
-export interface LayoutContextProps {
-  siderHook: {
-    addSider: (id: string) => void;
-    removeSider: (id: string) => void;
-  };
-}
-export const LayoutContext = React.createContext<LayoutContextProps>({
-  siderHook: {
-    addSider: () => null,
-    removeSider: () => null,
-  },
-});
-
 interface BasicPropsWithTagName extends BasicProps {
   tagName: 'header' | 'footer' | 'main' | 'div';
 }
@@ -91,11 +81,13 @@ const BasicLayout = React.forwardRef<HTMLDivElement, BasicPropsWithTagName>((pro
   const { getPrefixCls, layout } = React.useContext(ConfigContext);
   const prefixCls = getPrefixCls('layout', customizePrefixCls);
 
+  const mergedHasSider = useHasSider(siders, children, hasSider);
+
   const [wrapSSR, hashId] = useStyle(prefixCls);
   const classString = classNames(
     prefixCls,
     {
-      [`${prefixCls}-has-sider`]: typeof hasSider === 'boolean' ? hasSider : siders.length > 0,
+      [`${prefixCls}-has-sider`]: mergedHasSider,
       [`${prefixCls}-rtl`]: direction === 'rtl',
     },
     layout?.className,