In order to achieve a good effect of the assisted exoskeleton in different terrains,, this paper researches how different terrain features affect the torque variation of the joint of the assisted exoskeleton. Firstly, the optical three-dimensional motion capture system was used to build a human data acquisition experimental platform to obtain the gait data of the human body with a weight of 45kg moving in different terrains. Then, based on the Lagrange method, the dynamic model of the assisted exoskeleton was established and analyzed. Finally, through ADAMS dynamics simulation, the variation characteristics of the torque of each joint when the 45kg of the exoskeleton is moved under a variety of terrains are compared and analyzed The results provide a basis for the driving control of the exoskeleton in various terrains.