Abstract: Aiming at the complex agricultural machinery operation background of hilly and mountainous areas with large terrain, small plots and heavy soil, and the increasing demand for efficient, safe and environmentally friendly caterpillar chassis in existing agricultural machinery operations, a mountain electric caterpillar chassis was designed and manufactured.Solidworks software was used to establish the track chassis model and Adams multi-body dynamics simulation software was used to conduct dynamic simulation on the slope climbing, ditch crossing and obstacle crossing performance of the chassis.The simulation results showed that the maximum slope climbing Angle was 25°,the maximum ditch width was 400 mm and the maximum vertical obstacle crossing height was 200 mm.The simulation test verifies the feasibility of the chassis in the driving process, and provides a reference for further optimizing the chassis structure of agricultural machinery in hilly and mountainous areas.