Persons with disabilities who have difficulty moving their legs and feet generally use mobility aids, prosthetic limbs and wheelchairs to transfer activities. 1. Walking aids: according to the actual situation, the use of walking aids such as armpit stick, cane, walking frame, etc. can be skillfully mastered after rehabilitation training to transfer activities, which is the most commonly used method under normal circumstances. 2. Prosthetic limbs: Under the scientific and precise measurement of professional rehabilitation therapists, we can customize the prosthetic limbs with higher degree of conformity with ourselves, which can better improve the mobility and the living standard. 3. Wheelchair: When the degree of disability is high and it is not possible to use a walker or prosthesis through rehabilitation training, a wheelchair can be chosen to replace the ability to walk. The disabled should go to the hospital for rehabilitation assessment in time when they have difficulty in moving their legs and feet, so as to choose the correct assistive devices and restore the walking function.