Cerebral infarction is a neurological deficit caused by ischemia, hypoxia and necrosis of brain tissue, which belongs to cerebrovascular disease. The causes of cerebral infarction are mainly atherosclerosis, dislodged vascular emboli and other rare causes.1. Atherosclerosis: atherosclerotic plaques appear in the walls of the arterial vessels of patients and gradually develop to form thrombi, or there is arterial entrapment, which also very easily leads to vascular blockage; 2. Dislodged vascular emboli: the emboli on large vessels such as the heart or aortic arch are dislodged and enter the cerebral arteries with blood flow, causing blood vessel blockage, ischemia and necrosis, which triggers cerebral infarction. Patients with this condition usually have primary diseases or symptoms, commonly atrial fibrillation, rheumatic heart disease, congestive heart failure, left ventricular thrombosis, diffuse intravascular coagulation, erythrocytosis, thrombocytosis, etc.; 3. Other rare causes: drugs, tumors, fat emboli, gas emboli, etc. enter the cerebral arteries to cause blockage; immune abnormalities cause arteritis, as well as leptospirosis, tuberculosis, syphilis The inflammation of blood vessels can easily cause infiltration and damage to the intima, causing blood to enter the vessel wall and form stenosis and infarction. The specific cause of cerebral infarction needs to be investigated and diagnosed in the hospital, and treatment is carried out after clarifying the cause. In addition, people with hypertension, hyperlipidemia, diabetes, obesity and long-term alcohol consumption have a much higher prevalence rate compared with ordinary people, so they should pay attention to physical health care and keep blood pressure, blood lipids, blood sugar and other indicators in a normal state.