The severity of cerebral infarction in the 50s is directly related to the site of infarction and the area of infarction, but the presence of cerebral infarction in the patient’s 50s indicates that atherosclerosis already exists and secondary prevention of cerebrovascular should be initiated. Secondary prevention of cerebrovascular disease includes active blood pressure control to keep blood pressure in a stable range. High pressure should be below 140 mmHg and low pressure below 90 mmHg, while blood glucose and blood lipids, especially LDL in blood lipids, serum homocysteine and neck ultrasound should be monitored to check the degree of atherosclerosis and whether there is plaque. Patients should have a low-salt, low-fat diet. If the gastrointestinal tract is functioning normally, oral anti-platelet aggregation medication aspirin or Poliovel can be considered, and regular outpatient checks for cerebrovascular-related risk factors.