Crawler robots with large load capacity, strong barrier capability and other characteristics, is widely used in inspection and detection, emergency rescue and other fields. The mechanical stability of the chassis structure during walking will directly affect the performance of airborne detectors, sensors and the like. In view of this, the kinetic theory model and the road spectrum function were established, the virtual prototype model of the crawler robot chassis was established by using the dynamic analysis software ADAMS,the chassis dynamics performance was simulated under different road conditions by combining with the road spectrum function.The vibration acceleration curves at different speeds were obtained and compared with the experimental results.It provides reference for the installation and performance prediction of airborne equipment.