Cerebrovascular disease is a general term for various vascular lesions in the brain, including hemorrhagic and ischemic cerebrovascular disease. Acute cerebrovascular disease is also known as stroke. Cerebrovascular disease occurs as a result of changes in blood composition and blood flow dynamics based on vascular lesions. The vascular lesions that lead to cerebrovascular disease are mainly atherosclerosis, the changes in blood composition are mainly increased blood viscosity, lipids and fibrinogen, and the changes in blood flow dynamics are mainly hypertension and hypotension. The triggers are usually emotional stress, excessive fatigue, alcohol abuse and sudden climatic changes. How to prevent cerebrovascular disease is a matter of great concern. The following aspects provide some preventive measures for people over 35 years old who do not suffer from cerebrovascular disease. 1. Know the patient’s blood pressure. Measure it at least once a year. If it is elevated, the blood pressure should be controlled within the normal range under the guidance of a doctor. Once the doctor finds the right blood pressure lowering medication for the patient, there are few side effects and it will not affect the patient’s quality of life. 2. Know whether you have atrial fibrillation. Atrial fibrillation is an irregular heartbeat that alters the normal function of the heart and makes it easy for certain components of the blood to collect in the atria. The irregular heartbeat tends to dislodge these components, which flow throughout the body with the blood and cause strokes. You can feel your pulse or go to the hospital for an electrocardiogram to determine this. If there is atrial fibrillation, in order to reduce the risk of stroke, doctors usually let oral medications such as warfarin or aspirin be taken. 3. If the patient smokes, he or she should quit it. Smoking doubles the risk of stroke. If you start to quit smoking today, the risk of stroke starts to drop immediately. 4. If you drink alcohol, you should keep it moderate. Studies have shown that 2 drinks a day can reduce strokes by 50%. However, more than 2 drinks increases the risk of stroke by 3 times and leads to liver disease, traffic accidents and even more. If you drink alcohol and find it very difficult to quit, you must pay attention to the following points: ① Don’t drink too much, make sure an appropriate amount and follow it carefully; ② Drinking at home is easier to control the amount than drinking outside; ③ Determine 2-3 days a week when you don’t drink; ⑤ Choose protein-rich downers such as fish. 5. Know if you have high blood lipids. High cholesterol increases the risk of stroke. Recent studies have shown that high triglyceridemia has an increased risk of stroke in women. High blood lipids can be controlled by diet and physical activity. Some people also need medication. 6. If you have diabetes, follow your doctor’s advice carefully and choose diet control plus physical exercise if you cannot achieve good blood glucose control, you can have your doctor choose appropriate medication control for the patient in order to reduce the risk of stroke. 7. Find out whether the patient has hyperviscosity and hyperfibrinogenemia. Appropriate amount of water intake and necessary medication can be taken.