在xAxis配合中加 interval: 0
"xAxis":[
{"data":["2015-5-13","2015-5-14","2015-5-15","2015-5-16","2015-5-17","2015-5-18","2015-5-19","2015-5-20","2015-5-21","2015-5-22","2015-5-23","2015-5-24","2015-5-25"],
"type":"category",
"axisLabel":{
interval: 0
}
}],