We have treated 634 cases of cerebrovascular disease who admitted to the Yeungnam University hospital form May 1983 to march 1988. The authors analysed the clinical aspects of cerebrovascular disease, and the results are as followings. 1) The hemorrhagic stroke was 4 times more than the ischemic stroke. 2) The hemorrhagic stroke occur most frequently in fifth decade and the ischemic stroke occur in sixth decade. 3) An infarction was most common in the ischemic stroke. 4) The most common cause of intracerebral hemorrhage was hypertension. S) The most common cause of subarachnoid hemorrhage was aneurysm. 6) The intracerebral hemorrhage occur most frequently in the putamen(35.1%) followed by the thalamus(29.2%), subcortical(24.8%), brain stem(5.9%) and cerebellum(5.0%). 7) The aneurysmal sac was located most frequently in the A-com(28.3%), followed by MCA(26.4%), and P-com(25.5%). The multiple aneurysm occurred in 13% of 92 cases.