The invention discloses an adjustable automobile seat which comprises a left part, a middle part and a right part. The shape and height of a seat riding surface are adjusted through telescopic vibration-reducing units respectively at the bottoms of the three parts, the waist and buttock wrapping performance of the left side and right side of the seat is improved, and the vibration reduction and comfort improvement effect is achieved. A backrest is provided with a waist supporting body, and the radian of the waist-back contact surface of the seat backrest is changed through an adjusting device, so that the effect of relieving waist fatigue is achieved. In the driving process, on one hand, the dynamic stability and supporting performance of the seat are maintained through the telescopic vibration-reducing units, and on the other hand, the comfort and supporting performance of the seat can be adjusted according to different working conditions fed back by an automobile. The adjustable automobile seat improves driving comfort for drivers and greatly prolongs driving time of the drivers, the adverse impacts of driving fatigue and distraction caused by endurance run and poor road conditions are avoided, and the vehicle driving safety is improved.