In this paper, a vehicle use air suspension with auxiliary chamber simulation model was established by the AMEsim pneumatic platform. The influences of the air spring inflation pressure, volume ratio of the main chamber and auxiliary chamber and orifice size on dynamic characteristics of the vertical air suspension were analyzed in detail. In order to verify the accuracy of the AMEsim simulation model, the AMEsim analysis results were compared with Simulink simulation results. The identical simulation results verify the reliability of AMEsim simulation. The study reveals that: the diversification of the volume ratio of the main chamber and auxiliary chamber, air spring inflation pressure and orifice size has different degrees influences on the dynamic characteristics of the air suspension with auxiliary chamber.