Air spring with an additional air chamber and magneto-rheological shock absorber had been applied into a scissors seat, transfer function had been deduced through differential equations of motion of this air suspension seating system. The PID control simulation model of this seat suspension had been established using MATLAB/Simulink. The excitation in this model is the acceleration of the seat bearing center. Take ContiTech's SK37-6-type membrane air springs, HY-Z04-type scissors seats and LORD-1005-type magneto-rheological shock absorber produced by LORD of USA as examples. The excitation is the acceleration of the seat bearing center. Automobile’s response had been studied at speed of 8km/h in the PID control simulation for driver’s seat model .The results show that the acceleration of seat through PID control less than the one without PID control.