Lacunar cerebral infarction is generally not serious. Lacunar infarction refers to the ischemia of small arteries in the deep passages of the brain, which triggers microscopic infarction of brain tissue. The prognosis of lacunar cerebral infarction is relatively good, with low mortality and disability rates, but it is prone to recurrent attacks, so secondary prevention medication for cerebrovascular disease is particularly important. Patients should have a low-salt and low-fat diet, ensure more daily physical exercise to enhance physical fitness, and take regular secondary prevention medication for cerebrovascular disease, such as oral aspirin or clopidogrel hydrogen sulfate, as prescribed by the physician, to prevent platelet aggregation. In terms of diet, we should pay attention to balanced nutrition, low salt, low fat, low sugar diet, and eat more foods rich in vitamins, folic acid, minerals and trace elements as appropriate. In terms of daily prevention, it is important to control blood pressure, blood lipids, blood sugar, quit smoking, maintain a healthy weight, rest regularly and get enough sleep.