After cerebral infarction some can die within days, or months or even years, and some patients can also survive for life without affecting life expectancy. It mainly depends on the size of the infarcted foci and the location of the infarct. If it is a large hemispheric infarct or a brainstem ridge infarct, the clinical symptoms and signs are more severe, most patients may have cerebral edema and increased intracranial pressure, and in severe cases of increased intracranial pressure, cerebral herniation can be induced, which can directly lead to the patient’s death. If the patient has cerebral edema, it usually begins to appear on the second day of the onset of the disease, 4-5 days for the peak of cerebral edema, usually 7 days after the cerebral edema began to subside, and two weeks later the cerebral edema basically disappeared. Most patients in the acute phase are associated with cerebral edema, and most may fall into the peak edema phase. Alternatively, some patients may die from complications, usually after two weeks or for months or even years. For patients with small cerebral infarcts that are clinically mild, most of which do not have cerebral edema or increased intracranial pressure, they can be clinically cured with aggressive and correct treatment and will not affect the patient’s life expectancy.