研究了好久终于弄出来了，上代码，代码可以直接copy到官网去试，看看效果。

var data = [
  {
    name: 'Grandpa',
    children: [
      {
        name: 'Uncle Leo',
        value: 15,
        children: [
          {
            name: 'Cousin Jack',
            value: 2
          },
          {
            name: 'Cousin Mary',
            value: 5,
            children: [
              {
                name: 'Jackson',
                value: 2
              }
            ]
          },
          {
            name: 'Cousin Ben',
            value: 4
          }
        ]
      },
      {
        name: 'Aunt Jane',
        children: [
          {
            name: 'Cousin Kate',
            value: 4
          }
        ]
      },
      {
        name: 'Father',
        value: 10,
        children: [
          {
            name: 'Me',
            value: 5,
            //可以单独给某个元素添加颜色
            itemStyle: {
              color: 'red'
            }
          },
          {
            name: 'Brother Peter',
            value: 1
          }
        ]
      }
    ]
  },
  {
    name: 'Mike',
    children: [
      {
        name: 'Uncle Dan',
        children: [
          {
            name: 'Cousin Lucy',
            value: 3
          },
          {
            name: 'Cousin Luck',
            value: 4,
            children: [
              {
                name: 'Nephew',
                value: 2
              }
            ]
          }
        ]
      }
    ]
  },
  {
    name: 'Nancy',
    children: [
      {
        name: 'Uncle Nike',
        children: [
          {
            name: 'Cousin Betty',
            value: 1
          },
          {
            name: 'Cousin Jenny',
            value: 2
          }
        ]
      }
    ]
  }
];
option = {
   //添加图例
  visualMap: {
    dimension:2,
    seriesIndex: 2,
    padding:5,
    textGap:4,
    color: ['#AEC48F', '#FFDB5C', '#F98862'].reverse(),
    categories:data.map(item=>item.name),
    textStyle: {
      //color: "#fff",//图例文字颜色
    },
  },
  series: {
    type: 'sunburst',
    data: data,
    radius: [0, '90%'],
    label: {
      rotate: 'radial'
    }
  }
};