option = { title: { text: 'Awesome Chart' }, legend: { data: [{ name: '增量' //first legend }, { name: '增速' //second legend }] }, xAxis: [{ gridIndex: 0, type: 'category', data: ['1月-3月', '4月-6月', '7月-9月', '10月-12月'] }, { gridIndex: 1, type: 'category', data: ['1月-3月', '4月-6月', '7月-9月', '10月-12月'] }], yAxis: [{ gridIndex: 0, type: 'value', name: '' }, { gridIndex: 1, type: 'value', name: '' }], grid: [{ show: false, left: '10%', top: '10%', containLabel: true, width: '30%', height: '35%' }, { show: false, left: '50%', top: '10%', containLabel: true, width: '30%', height: '35%' }], //this is the first legend's series data, //how to set the second legend's series data? series: [{ name: '增量', type: 'line', xAxisIndex: 0, yAxisIndex: 0, label: { normal: { show: true, position: 'top', } }, data: [56, 90, 98, 151] }, { name: '增量', type: 'line', xAxisIndex: 0, yAxisIndex: 0, label: { normal: { show: true, position: 'top', } }, data: [48, 152, 160, 165] }, { name: '增速', type: 'line', xAxisIndex: 1, yAxisIndex: 1, symbolSize: 8, //拐点大小 label: { normal: { show: true, position: 'top' } }, data: [23, 58, 97, 106] }, { name: '增速', type: 'line', xAxisIndex: 1, yAxisIndex: 1, symbolSize: 8, //拐点大小 label: { normal: { show: true, position: 'top' } }, data: [10, 85, 98, 105] }] };