diff --git a/components/affix/__tests__/Affix.test.tsx b/components/affix/__tests__/Affix.test.tsx
index cbe9b44815..80b22c4474 100644
--- a/components/affix/__tests__/Affix.test.tsx
+++ b/components/affix/__tests__/Affix.test.tsx
@@ -1,10 +1,9 @@
 import type { CSSProperties } from 'react';
 import React, { useEffect, useRef } from 'react';
-import type { InternalAffixClass } from '..';
 import Affix from '..';
 import accessibilityTest from '../../../tests/shared/accessibilityTest';
 import rtlTest from '../../../tests/shared/rtlTest';
-import { render, triggerResize, waitFakeTimer } from '../../../tests/utils';
+import { render, waitFakeTimer } from '../../../tests/utils';
 import Button from '../../button';
 
 const events: Partial<Record<keyof HTMLElementEventMap, (ev: Partial<Event>) => void>> = {};
@@ -14,11 +13,9 @@ interface AffixProps {
   offsetBottom?: number;
   style?: CSSProperties;
   onChange?: () => void;
-  onTestUpdatePosition?: () => void;
-  getInstance?: (inst: InternalAffixClass) => void;
 }
 
-const AffixMounter: React.FC<AffixProps> = ({ getInstance, ...restProps }) => {
+const AffixMounter: React.FC<AffixProps> = (props) => {
   const container = useRef<HTMLDivElement>(null);
   useEffect(() => {
     if (container.current) {
@@ -31,8 +28,8 @@ const AffixMounter: React.FC<AffixProps> = ({ getInstance, ...restProps }) => {
   }, []);
   return (
     <div ref={container} className="container">
-      <Affix className="fixed" ref={getInstance} target={() => container.current} {...restProps}>
-        <Button type="primary">Fixed at the top of container</Button>
+      <Affix className="fixed" target={() => container.current} {...props}>
+        <Button>Fixed at the top of container</Button>
       </Affix>
     </div>
   );
@@ -124,36 +121,6 @@ describe('Affix Render', () => {
   });
 
   describe('updatePosition when target changed', () => {
-    it('function change', async () => {
-      document.body.innerHTML = '<div id="mounter" />';
-      const container = document.getElementById('mounter');
-      const getTarget = () => container;
-      let affixInstance: InternalAffixClass;
-      const { rerender } = render(
-        <Affix
-          ref={(node) => {
-            affixInstance = node as InternalAffixClass;
-          }}
-          target={getTarget}
-        >
-          {null}
-        </Affix>,
-      );
-      rerender(
-        <Affix
-          ref={(node) => {
-            affixInstance = node as InternalAffixClass;
-          }}
-          target={() => null}
-        >
-          {null}
-        </Affix>,
-      );
-      expect(affixInstance!.state.status).toBe(0);
-      expect(affixInstance!.state.affixStyle).toBe(undefined);
-      expect(affixInstance!.state.placeholderStyle).toBe(undefined);
-    });
-
     it('check position change before measure', async () => {
       const { container } = render(
         <>
@@ -169,80 +136,5 @@ describe('Affix Render', () => {
       await movePlaceholder(1000);
       expect(container.querySelector('.ant-affix')).toBeTruthy();
     });
-
-    it('do not measure when hidden', async () => {
-      let affixInstance: InternalAffixClass | null = null;
-
-      const { rerender } = render(
-        <AffixMounter
-          getInstance={(inst) => {
-            affixInstance = inst;
-          }}
-          offsetBottom={0}
-        />,
-      );
-      await waitFakeTimer();
-      const firstAffixStyle = affixInstance!.state.affixStyle;
-
-      rerender(
-        <AffixMounter
-          getInstance={(inst) => {
-            affixInstance = inst;
-          }}
-          offsetBottom={0}
-