Stroke prevention is divided into four levels of prevention. The four-level prevention system is designed to better prevent the occurrence of stroke and to prevent recurrence of stroke. First of all, primary prevention refers to patients who have not had a stroke, but may have risk factors for stroke. The need to control the risk factors and change the poor lifestyle to prevent the occurrence of stroke is called primary prevention. The most important thing to do in primary prevention is to change your lifestyle, avoid excessive overeating and binge drinking, overwork and fast pace of life, control blood pressure, blood lipids, blood sugar, quit smoking, limit alcohol, and keep a good attitude. Being able to have more than 5 days of physical exercise per week and 30 minutes of physical activity per day are the main points of primary prevention. Also, diet with low salt and low fat, more fruits and vegetables, cereals and coarse fiber diet. Secondary prevention refers to the prevention of recurrence of stroke, such as transient ischemic attack, cerebral infarction or minor cerebral hemorrhage or cerebral ischemia, after the patient has been treated and discharged from the hospital. During this period, anti-thrombotic drugs and drugs to reduce atherosclerosis should be taken carefully. Control blood pressure and diabetes and follow up regularly at the stroke clinic and neurology clinic to prevent recurrence of stroke. Secondary prevention also requires lifestyle intervention, a low-salt, low-fat diet, a good state of mind, reasonable physical exercise and reasonable rehabilitation measures to reduce stroke recurrence. With standardized prevention, 90% of strokes can be reduced in occurrence and recurrence. This measure is very meaningful and has been promoted by cerebrovascular disease doctors in recent years as active treatment, prevention first, into focused migration. We also hope to do the promotion of real prevention intervention for a healthy China to ensure the health of the people.