diff --git a/components/cascader/nz-cascader.spec.ts b/components/cascader/nz-cascader.spec.ts
index fbe033d25dc..2206d73e4bc 100644
--- a/components/cascader/nz-cascader.spec.ts
+++ b/components/cascader/nz-cascader.spec.ts
@@ -1176,6 +1176,71 @@ describe('cascader', () => {
       expect(overlayContainerElement.querySelectorAll('.ant-cascader-menu').length).toBe(0); // 0列
       expect(testComponent.cascader.isMenuVisible()).toBe(false);
     }));
+    it('should not change on hover work', fakeAsync(() => {
+      testComponent.nzChangeOnSelect = true;
+      testComponent.nzExpandTrigger = 'hover';
+      fixture.detectChanges();
+      expect(testComponent.values).toBeNull();
+      expect(overlayContainerElement.querySelectorAll('.ant-cascader-menu').length).toBe(0); // 0列
+      expect(testComponent.values).toBeNull(); // not select yet
+
+      testComponent.cascader.setMenuVisible(true);
+      fixture.detectChanges();
+      expect(overlayContainerElement.querySelectorAll('.ant-cascader-menu').length).toBe(1); // 1列
+      expect(testComponent.values).toBeNull(); // not select yet
+
+      const itemEl1 = overlayContainerElement.querySelector('.ant-cascader-menu:nth-child(1) .ant-cascader-menu-item:nth-child(1)') as HTMLElement; // 第1列第1个
+      expect(itemEl1.classList).not.toContain('ant-cascader-menu-item-active');
+      dispatchMouseEvent(itemEl1, 'mouseenter');
+      fixture.detectChanges();
+      tick(200);
+      fixture.detectChanges();
+
+      expect(testComponent.cascader.isMenuVisible()).toBe(true);
+      expect(itemEl1.classList).toContain('ant-cascader-menu-item-active');
+      expect(overlayContainerElement.querySelectorAll('.ant-cascader-menu').length).toBe(2); // 2列
+      expect(testComponent.values).toBeNull(); // mouseenter does not trigger selection
+
+      const itemEl2 = overlayContainerElement.querySelector('.ant-cascader-menu:nth-child(2) .ant-cascader-menu-item:nth-child(1)') as HTMLElement; // 第2列第1个
+      expect(itemEl1.classList).toContain('ant-cascader-menu-item-active');
+      expect(itemEl2.classList).not.toContain('ant-cascader-menu-item-active');
+      dispatchMouseEvent(itemEl2, 'mouseenter');
+      fixture.detectChanges();
+      tick(200);
+      fixture.detectChanges();
+
+      expect(testComponent.cascader.isMenuVisible()).toBe(true);
+      expect(itemEl1.classList).toContain('ant-cascader-menu-item-active');
+      expect(itemEl2.classList).toContain('ant-cascader-menu-item-active');
+      expect(overlayContainerElement.querySelectorAll('.ant-cascader-menu').length).toBe(3); // 3列
+      expect(testComponent.values).toBeNull(); // mouseenter does not trigger selection
+
+      const itemEl3 = overlayContainerElement.querySelector('.ant-cascader-menu:nth-child(3) .ant-cascader-menu-item:nth-child(1)') as HTMLElement; // 第3列第1个
+      expect(itemEl1.classList).toContain('ant-cascader-menu-item-active');
+      expect(itemEl2.classList).toContain('ant-cascader-menu-item-active');
+      expect(itemEl3.classList).not.toContain('ant-cascader-menu-item-active');
+      dispatchMouseEvent(itemEl3, 'mouseenter');
+      fixture.detectChanges();
+      tick(200);
+      fixture.detectChanges();
+
+      expect(testComponent.values).toBeNull(); // mouseenter does not trigger selection
+
+      itemEl3.click();
+      fixture.detectChanges();
+      tick(200);
+      fixture.detectChanges();
+
+      expect(testComponent.values).toBeDefined(); // click trigger selection
+      expect(testComponent.values.length).toBe(3);
+      expect(testComponent.values[ 0 ]).toBe('zhejiang');
+      expect(testComponent.values[ 1 ]).toBe('hangzhou');
+      expect(testComponent.values[ 2 ]).toBe('xihu');
+      flush(); // wait for cdk-overlay to close
+      fixture.detectChanges();
+      expect(overlayContainerElement.querySelectorAll('.ant-cascader-menu').length).toBe(0); // 0列
+      expect(testComponent.cascader.isMenuVisible()).toBe(false);
+    }));
     it('should change on function work', fakeAsync(() => {
       testComponent.nzChangeOn = testComponent.fakeChangeOn;
       fixture.detectChanges();