Prevention of cerebral infarction is mainly about controlling risk factors, which specifically include two categories of interventions and non-interventions. The intervenable 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.; the non-intervenable factors are mainly age, gender, family genetics, etc. For people who have not suffered from cerebral infarction, they should change their unhealthy lifestyles, quit smoking and limiting alcohol, have regular medical checkups, and proactively screen and control the above-mentioned risk factors, so as to achieve the goal of not or delay the occurrence of cerebral infarction. For patients who have had cerebral infarction, all intervenable risk factors 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 drugs choose the combination of folic acid, vitamin B6 and vitamin B12. For non-cardiogenic causes of cerebral infarction, patients are recommended to apply anti-platelet aggregation drugs to prevent recurrence of cerebral infarction, mainly including aspirin, clopidogrel, cilostazol, tigretol, etc. For patients 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). If you experience bleeding gums, dark stools, or subcutaneous ecchymosis, you should consult a doctor to adjust the medication. In conclusion, medication is only one aspect of cerebral infarction prevention, and 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, taking low-fat food rich in high-quality protein, carbohydrates, vitamins and trace elements as the principle, appropriate exercise, regular physical examination for high-risk patients, and adherence to drug prevention.