The utility model discloses an automobile chair, include seat portion, back and set up the back cushion portion on the back, back cushion portion follows back length direction is equipped with two at least, is equipped with the mounting groove that holds back cushion portion on the back, and the degree of depth of mounting groove is greater than the thickness of back cushion portion, is equipped with the locking mechanism who is used for fixed back cushion portion on the back, along the thickness direction and be equipped with a plurality of locking mechanism of letting male locking holes in the back cushion portion. The utility model discloses an automobile chair is through set up a plurality of front and back adjustable back cushion portions in position on the back of seat, through adjusting the driver that can be adapted to different heights, in addition through adjusting the support that can be adapted to the different positions of driver's health to can improve the travelling comfort of taking, the structure is also simple moreover, convenient to use.