Stroke is generally secondary prevention, there are primary prevention and secondary prevention, and the latest proposed a tertiary prevention, as follows: 1, the primary prevention of stroke, that is, the patient has not had a stroke, but there are risk factors for stroke, such as age over 60 years, hypertension, diabetes, dyslipidemia, carotid atherosclerosis plaque formation, homocysteine increased, or other metabolic Primary prevention is to control different risk factors for each individual, such as controlling blood glucose, blood pressure, lowering blood lipids, or controlling elevated uric acid, or lowering homocysteine, which are all part of primary prevention. In addition to controlling risk factors, it is also recommended to exercise more, especially aerobic exercise, reduce weight, minimize sedentary activities, control diet, etc., i.e. lifestyle habits plus control of risk factors. Whether it is hypertension, diabetes mellitus, dyslipidemia or homocysteine elevation, according to the different risk factors of different people, drug treatment, coupled with lifestyle and lifestyle changes to reduce the risk of stroke, this is secondary prevention. This is tertiary prevention. The main measure is rehabilitation, which can reduce the degree of disability, or reduce the disability, or even allow the patient to achieve full recovery. The main measure is rehabilitation, including psychological rehabilitation and physical rehabilitation, i.e. after stroke, patients with motor disorders, i.e. impaired movement of limbs, speech disorders, i.e. inability to speak clearly, cognitive disorders, i.e. slow reaction, reduced intelligence, or swallowing disorders, should undergo appropriate rehabilitation treatment. Rehabilitation is recommended to go to the rehabilitation department for formal neurological rehabilitation. Long-term, reasonable and scientific rehabilitation can reduce the degree of disability or even complete recovery, which is a tertiary prevention measure to reduce the degree of disability and lower the rate of disability.