The mortality rate of cerebral infarction is 5-15% and the disability rate is about 50%. Cerebral infarction refers to localized ischemic necrosis and softening of brain tissues caused by obstruction of blood supply to the brain and ischemia and hypoxia, and the clinical symptoms can be manifested as headache, dizziness, numbness of limbs, hemiparesis, and even coma with cerebral hernia. The common causes of cerebral infarction include large artery atherosclerosis, cardiogenic embolism, small artery embolism, smog disease, etc. The prognosis of cerebral infarction depends on the lesion. The prognosis of cerebral infarction depends on the location of the lesion, the size of the infarct, the cause of the disease, whether there are complications and the timing of treatment. If there is a large cerebral infarction, hemiplegia, mild hemiparesis, or even quadriplegia, and coma with cerebral herniation can occur. Some patients may die from complications such as lung infection, cardiac insufficiency, renal insufficiency, etc. The mortality rate of cerebral infarction is relatively high. If the condition is diagnosed, it is necessary to go to a regular hospital for active treatment in time to improve the prognosis.