The seat massage button of Haval H6 is shown in the figure below. The massage function of the seat is to add a pneumatic device in the seat, and the air pressure is provided by the air pump in the engine compartment to protect the lumbar spine. At the same time, these pneumatic chambers are controlled by computer-controlled electronic oscillators installed in the backrest. The electronic oscillator changes the pressure in the air pressure chamber according to the pre-written program, so that the seat surface moves with it, thus achieving the purpose of massaging the drivers and passengers. In high-end cars, designers endow car seats with massage and ventilation functions to meet the growing needs of consumers. Seats involve electronics, ergonomics, industrial design and other fields. The car seat has developed from a simple part to a more complex and precise part. The function of car seat is gradually extended, not only to provide good driving and riding posture.