Cerebellar necrosis may kill the patient for a short period of time, or the patient may survive from three months to more than three years, or even as long as normal. There is no specific time frame for survival, as it varies with the severity of the disease in each patient. If the scope of cerebellar necrosis is relatively large, inducing more serious cerebral edema, it will be easy to form the occipital foramen magnum narrow hernia. It may even directly compress the life center of the brainstem and the respiratory and circulatory centers, and once the respiratory and circulatory centers are damaged, it may directly lead to the death of the patient. If the scope of cerebellar necrosis is relatively small, the impact on life is generally smaller. Cerebellar necrosis plays an important role in motor coordination, so it can cause ataxia, which will affect the patient’s life and work to a certain extent. Patients can live from three months to more than three years, and some may even live as long as a normal person.