在Element UI中，可以通过自定义El-Tab组件和自定义El-Panel组件来实现头部固定，以及当El-Panel超出高度时滚动的功能。

以下是一个简单的示例：

1. 定义自定义El-Tab组件：

```javascript import { Tab, Panel } from 'element-ui';

export default { extends: Tab, props: { name: { type: String, required: true }, content: { type: Array, default: () => [] }, header: { type: String, default: () => '' }, footer: { type: String, default: () => '' }, }, render: (h) => { return h('div', { key: this.$index, style: { position: 'fixed', top: 0, left: 0, width: '100%', height: '100%', overflow: 'auto', background-color: '#fff', zIndex: 9999, }, children: this.content.map((item, index) => h('div', { key: index, style: { position: 'relative', display: 'flex', alignItems: 'center', justifyContent: 'center', top: ${index * 100}%, left: ${index * 100}%, padding: '10px', border: '1px solid #ccc', borderRadius: 5px, width: ${100 - item.length * 100}%, height: ${item.length * 100}%, overflow: 'hidden', }), })), footer: h('div', { key: this.$index, style: { position: 'absolute', bottom: 0, left: 0, width: '100%', height: '100%', overflow: 'auto', background-color: '#fff', zIndex: 9999, }, }), }); }, }; ```

1. 定义自定义El-Panel组件：

```javascript import { Panel } from 'element-ui';

export default { extends: Panel, props: { name: { type: String, required: true }, content: { type: Array, default: () => [] }, header: { type: String, default: () => '' }, footer: { type: String, default: () => '' }, }, render: (h) => { return h('div', { key: this.$index, style: { position: 'fixed', top: 0, left: 0, width: '100%', height: '100%', overflow: 'auto', background-color: '#fff', zIndex: 9999, }, children: this.content.map((item, index) => h('div', { key: index, style: { position: 'relative', display: 'flex', alignItems: 'center', justifyContent: 'center', top: ${index * 100}%, left: ${index * 100}%, padding: '10px', border: '1px solid #ccc', borderRadius: 5px, width: ${100 - item.length * 100}%, height: ${item.length * 100}%, overflow: 'hidden', }), })), footer: h('div', { key: this.$index, style: { position: 'absolute', bottom: 0, left: 0, width: '100%', height: '100%', overflow: 'auto', background-color: '#fff', zIndex: 9999, }, }), }); }, }; ```

然后在你的代码中使用这些组件：

```javascript

```

在这个例子中，当用户点击Tab 1或Tab 2时，content数组中的相应项会显示。如果用户点击Tab 1，内容数组中的Tab 1会显示，内容数组中的Tab 2会隐藏，反之亦然。