Taking the air spring system as the research object, a high-precision nonlinear air spring chamber model was established in the temperature-pressure two aspects by using thermodynamic analysis method. Using adaptive fuzzy PID control strategy，taking the body height deviation e and the deviation change rate e c as the input of the system, the simulations of simple PID and adaptive fuzzy PID were carried out by using MATLAB/Simulink under different working conditions. The results show that compared with PID control, the vehicle performance is improved by using the adaptive fuzzy PID control strategy; compared with no controller, the height error RMSE improvement rate of vehicles with adaptive fuzzy PID control strategy can be reach up to 21.7%, the body height can be more quickly and accurately adjusted through the suspension system, the oscillation generated in the height control process can be reduced, and the ride comfort can be improved.