Abstract: Taking the in-wheel suspension configuration of the wheel driven automobile as the research object, the 1/4, 3-DOF wheel motor mount model under random road surface excitation is established, and the time and frequency characteristics of the three wheel motor mount configurations are compared and analyzed with the help of time domain diagram and PSD method. Based on this, taking the dynamic vibration absorption model of motor stator mount as an example, the influence of wheel motor suspension parameters on vehicle smoothness is simulated and analyzed, and suggestions are put forward to improve the ride of wheel motor driven automobile. The results show that compared with the multi-stage vibration isolation damping model of hub motor, the dynamic vibration absorption type damping model has better performance in improving the negative effect of vertical vibration, and the motor stator mount model improves the riding comfort performance of the car better than the motor overall mount model.