FREE WALK can help therapists to assist patients with lower body paralysis/weakness due to stroke and spinal injury to exercise, sit, stand, walk and other movements. This technology can upload all training processes and records to the cloud, and the rehabilitation effect is clearly visible, so medical staff can easily grasp the patient's status. Help them from standing to walking, improve lower limb mobility, provide a re-mobilization ability, avoid lower body muscle atrophy, and improve cardiopulmonary function and physical health quality. For patients with limb weakness caused by nerve damage, FREE WALK can set different parameters to allow patients to learn correct walking habits and improve activity quality.