Some patients with cerebral infarction recur within days of onset, some within months to years of onset, and some can remain recurring for life. Whether and when a recurrence occurs depends on a number of factors, such as whether the patient is on a controlled diet and long-term oral medication for secondary prevention. If patients are given long-term secondary prevention treatment, such as long-term oral aspirin to counteract platelet aggregation and oral statins such as simvastatin and rasulvastatin to regulate lipids and stabilize plaque, the risk of recurrence of cerebral infarction will be significantly reduced. The risk of recurrence of cerebral infarction in patients will also be significantly reduced if they adopt dietary control, such as low-fat and low-salt diet, quit smoking and avoid alcohol, and also control risk factors, such as hypertension and hyperlipidemia, and give active regulation with regular medication to reach the target value.