11 patients (8 male

3 female) with spontaneous oerebellar hemorrhage confirmed by CT

autopsy and operation were reported. Hypertensive atherosclerosis is the primary cause of the disease. By the classification of Yiker

the pathologic and pathoplysiologic mechanism

we discussed the characteristics between the critera of clinical diagnosis and the therapeutic choice between internal medicine and surgery. It was stressed that the change of conditions in patients ;with progressive course should be observed and the chance for operation should be caught hold of it will eventually raise the survival rate of the patients