diff --git a/src/components/select/__tests__/Select.test.js b/src/components/select/__tests__/Select.test.js
index f709f655de..f06e48405a 100644
--- a/src/components/select/__tests__/Select.test.js
+++ b/src/components/select/__tests__/Select.test.js
@@ -31,6 +31,13 @@ const optionsWithOutGroup = values.map((value, index) => ({
   label: labels[index],
 }));
 
+const expecialGroupOptions = values.map((value, index) => ({
+  value,
+  label: labels[index],
+  groupValue: undefined,
+  groupLabel: undefined,
+}));
+
 describe('<Select /> Single Multiple options or groupOptions ', () => {
   it('renders <Select /> components', () => {
     const tree = renderer.create(<Select defaultValue="all" options={options} />).toJSON();
@@ -47,7 +54,6 @@ describe('<Select /> Single Multiple options or groupOptions ', () => {
       .toJSON();
     expect(tree).toMatchSnapshot();
   });
-
   it('renders <Select.Option /> components', () => {
     const tree = renderer
       .create(
@@ -132,6 +138,13 @@ describe('<Select /> Single Multiple options or groupOptions ', () => {
     expect(document.querySelector('.gio-select-dropdown').querySelectorAll('.gio-select-list-option')).toHaveLength(1);
     tree.unmount();
   });
+  it('renders <Select /> expecialGroup components', () => {
+    const tree = mount(<Select options={expecialGroupOptions} />);
+    tree.simulate('click');
+    expect(document.querySelector('.gio-select-dropdown')).not.toBeNull();
+    expect(document.querySelector('.gio-select-list-group')).not.toBeNull();
+    tree.unmount();
+  });
 });
 
 describe('<Select /> allowClear onClear onAllowClear', () => {
@@ -310,6 +323,21 @@ describe('<Select allowCustomOptions multiple/> keyDown', () => {
       tree.unmount();
     });
   });
+  it('keyDown mouseEnter', () => {
+    const tree = mount(<Select multiple searchable="default" mode="tags" options={optionsWithOutGroup} />);
+    act(() => {
+      tree.simulate('click');
+    });
+    act(() => {
+      tree.find('input').simulate('change', { target: { value: '全部' } });
+    });
+    tree.mount().find('.gio-select-list-option').simulate('mouseenter');
+    tree.mount().find('.gio-select-list').simulate('keyDown', { keyCode: 13, key: 'Enter' });
+    expect(tree.render().find('.gio-select-values-wrapper').children('.gio-tag')).toHaveLength(1);
+    act(() => {
+      tree.unmount();
+    });
+  });
   it('keyDown', async () => {
     const tree = mount(<Select multiple mode="tags" options={optionsWithOutGroup} />);
     act(() => {
@@ -420,8 +448,6 @@ describe('<Select allowCustomOptions multiple/> keyDown', () => {
     tree.mount().find('.gio-select-list').simulate('keyDown', { keyCode: 38, key: 'ArrowUp' });
     tree.mount().find('.gio-select-list').simulate('keyDown', { keyCode: 38, key: 'ArrowUp' });
     tree.mount().find('.gio-select-list').simulate('keyDown', { keyCode: 13, key: 'Enter' });
-    // tree.mount().find('.gio-select-list').simulate('mouseLeave');
-    // tree.mount().find('.gio-select-list-option-container').simulate('mouseEnter');
     expect(tree.render().find('.gio-select-values-wrapper').children('.gio-tag')).toHaveLength(1);
     tree.unmount();
   });