Microcephaly is generally a slowly progressive disease, but the rate of progression varies depending on the cause. Clinically, the most common type of cerebellar atrophy is a kind of degeneration, in which the patients suffer from brain function decline due to ageing, and the progression is slow. Patients are usually combined with hypertension, diabetes and other underlying diseases, such as timely intervention treatment, can slow down the progress of the patient’s condition. There is also a kind of cerebellar atrophy is a genetic disease, such as spinal cerebellar ataxia, patients often have a family genetic history, the symptoms will appear earlier, the prognosis is worse, the treatment is also more tricky, at present can only carry out some symptomatic treatment. Therefore, if symptoms of cerebellar atrophy appear, such as ataxia, falling, poor speech, etc., you should go to the hospital in time.