Based on the principle of neural remodeling, combined with siting, standing and walking, it can realize the functions oflanding walking and standing in situ (one leg, and two legs). The mechanical leg can drive patients to complete a largenumber ot repeated physiological galt training, enhance muscle strength, and restore joint motion. in addition, a handcontroler can be added for paients to start and turn by themselves, and restore the proprioception during waking to agreater extent.