option = { xAxis: { data: ['GPU', 'CPU'], axisLabel: { textStyle: { fontSize: 20 } } }, yAxis: { boundaryGap: [0, 0.3], axisLabel: { formatter: function (value) { return value + ' ms'; }, textStyle: { fontSize: 14 } } }, series: [{ type: 'bar', data: [2, 286], barWidth: 100, label: { normal: { show: true, position: 'top', formatter: function (params) { return params.value + ' ms'; }, textStyle: { fontSize: 20 } } } }] }