diff --git a/components/_util/__tests__/scrollTo.test.js b/components/_util/__tests__/scrollTo.test.js
index 4722196cd9..9a9dff3320 100644
--- a/components/_util/__tests__/scrollTo.test.js
+++ b/components/_util/__tests__/scrollTo.test.js
@@ -1,15 +1,21 @@
 import scrollTo from '../scrollTo';
-import { sleep } from '../../../tests/utils';
 
 describe('Test ScrollTo function', () => {
+  beforeAll(() => {
+    jest.useFakeTimers();
+  });
+
+  afterAll(() => {
+    jest.useRealTimers();
+  });
+
   it('test scrollTo', async () => {
     const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((x, y) => {
-      const w = window;
-      w.scrollY = y;
-      w.pageYOffset = y;
+      window.scrollY = y;
+      window.pageYOffset = y;
     });
     scrollTo(1000);
-    await sleep(1000);
+    jest.runAllTimers();
     expect(window.pageYOffset).toBe(1000);
     scrollToSpy.mockRestore();
   });
@@ -19,7 +25,7 @@ describe('Test ScrollTo function', () => {
     scrollTo(1000, {
       callback: cbMock,
     });
-    await sleep(1000);
+    jest.runAllTimers();
     expect(cbMock).toHaveBeenCalledTimes(1);
   });
 
@@ -28,7 +34,7 @@ describe('Test ScrollTo function', () => {
     scrollTo(1000, {
       getContainer: () => div,
     });
-    await sleep(1000);
+    jest.runAllTimers();
     expect(div.scrollTop).toBe(1000);
   });
 });
diff --git a/components/back-top/__tests__/index.test.js b/components/back-top/__tests__/index.test.js
index c79229bf5f..acabb8c40b 100644
--- a/components/back-top/__tests__/index.test.js
+++ b/components/back-top/__tests__/index.test.js
@@ -1,9 +1,15 @@
 import React from 'react';
 import { mount } from 'enzyme';
-import { sleep } from '../../../tests/utils';
 import BackTop from '..';
 
 describe('BackTop', () => {
+  beforeAll(() => {
+    jest.useFakeTimers();
+  });
+
+  afterAll(() => {
+    jest.useRealTimers();
+  });
   it('should scroll to top after click it', async () => {
     const wrapper = mount(<BackTop visibilityHeight={-1} />);
     const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((x, y) => {
@@ -14,9 +20,9 @@ describe('BackTop', () => {
     window.scrollTo(0, 400);
     // trigger scroll manually
     wrapper.instance().handleScroll();
-    await sleep();
+    jest.runAllTimers();
     wrapper.find('.ant-back-top').simulate('click');
-    await sleep(1000);
+    jest.runAllTimers();
     expect(window.pageYOffset).toBe(0);
     scrollToSpy.mockRestore();
   });