The prevention of cerebral infarction is mainly to control risk factors, which include two categories of interventionable and non-interventionable, among which interventionable factors are the main target of cerebral infarction prevention, including hypertension, diabetes, dyslipidemia, hyperhomocysteinemia, smoking, alcoholism, obesity, atherosclerosis, oral contraceptive drugs, Chlamydia pneumoniae infection, etc. For people who have not suffered from cerebral infarction, they should proactively screen and control the above-mentioned risk factors by changing their unhealthy lifestyles at an early stage, quitting smoking and limiting alcohol, and having regular medical checkups, so as to achieve the goal of not or delaying the occurrence of cerebral infarction. For people with high-risk factors, they should also pay attention to regular physical examination and screening, pay attention to the aura symptoms in life, strive for early detection and treatment, and avoid cerebrovascular accidents. For patients who have had cerebral infarction, all intervenable risk factors present in the patient should be treated to reduce the risk of recurrence of cerebral infarction, such as applying appropriate antihypertensive drugs, hypoglycemic drugs and lipid-lowering drugs under the guidance of doctors, among which lipid-lowering drugs usually apply statins, and homocysteine lowering choose the combination of folic acid, vitamin B6 and vitamin B12. For non-cardiogenic causes of cerebral infarction, patients are advised to apply anti-platelet aggregation drugs to prevent recurrence of cerebral infarction, mainly including aspirin, clopidogrel, cilostazol, etc. For patients with cerebral infarction with persistent atrial fibrillation, anticoagulant drugs are often used to prevent re-embolism, and the commonly used oral anticoagulant drug is warfarin, which requires INR monitoring (control at 2.0-3.0). medication. In conclusion, prevention of cerebral infarction should be based on individualized health education programs for different risk factors, establishment of a reasonable lifestyle, such as quitting smoking, reducing alcohol intake, reasonable diet with the principle of consuming foods low in fat and rich in high-quality protein, carbohydrates, vitamins and trace elements, appropriate exercise, regular medical checkups for high-risk patients, and adherence to medication.