The main reason for recurrence of cerebral infarction is that patients do not carry out secondary preventive treatment, including long-term oral aspirin or clopidogrel antiplatelet aggregation therapy, oral statin drugs to regulate lipids and stabilize plaques, generally applying simvastatin, resuvastatin and atorstatin. It may also be caused by poor control of blood pressure, lipids and glucose after the onset of the disease, and if the patient usually smokes and drinks alcohol, and is obese and does not exercise properly, it is also easy to recur. If there is serious cerebrovascular stenosis, such as lower blood pressure, too low can cause low perfusion of the brain, easy to cause patients with cerebral infarction recurrence phenomenon. If the patient has atrial fibrillation, the heart embolism off is also easy to start cerebral infarction recurrence.