According to the literal meaning, rehabilitation is often understood as the healing of injuries and the restoration of health. However, as a medical term and an independent profession, rehabilitation medicine is a clinical discipline that studies the prevention, diagnosis and evaluation, treatment and handling of disabilities and functional disorders. It mainly focuses on various functional disorders and adopts comprehensive measures, mainly various training treatments, supplemented by braces, environmental modification and adaptation, so as to help them improve their physical and mental impairments to the maximum extent possible, bring into play their residual functions, enable patients to The aim is to help patients regain work skills and the ability to live independently, improve their self-care ability, and return to their families and society. Rehabilitation medicine is mainly for chronic patients and the disabled, and emphasizes functional rehabilitation, but also physical rehabilitation, so that patients can recover not only physically, but also psychologically and spiritually. Its focus is not only to preserve the life of the disabled, but also to restore their functions as much as possible, improve the quality of life, return to society and lead a meaningful life. The composition of rehabilitation medicine: basic rehabilitation, rehabilitation disability (the core and pillar of the discipline system), clinical rehabilitation assessment and clinical rehabilitation therapy. The target of rehabilitation medicine research: people with functional impairment and limited ability caused by injury or disease, and people with limited activity among the elderly.