基线效果图如下 ![](https://img.kancloud.cn/20/14/20143bc0062565e6dd7e74f9b1ddcfb2_775x410.png) 示例代码 ``` option.series[ 0].markLine = { silent: true, lineStyle: { normal: { color: '#FF00FF', }, }, data: [ { yAxis: 5000, }, { yAxis: 2000, }, ], }; ```