图例形状根据icon配置[https://echarts.apache.org/zh/option.html#legend.icon](https://link.segmentfault.com/?enc=uOVTwgZ2lz3lr4lXa8QBVw%3D%3D.cymwSwvbk45Yce3Udd9LbxLoe5QghIdTjiiwyViCkvfT5vju9T6VQz%2F36rmIA5lI%2FeSzQy%2FEICWFNo3JoqwE3A%3D%3D) 后面添加的样式可以在textStyle的rich中配置 legend: { textStyle: { rich: { a: { fontWeight: 'bold', padding: [0, 0, 0, 10] } } }, formatter: function (name) { return name + '{a|37}'; }, icon: 'circle' }, 