Computed Tomography(CT) is an accurate and noninvasive method in the evaluation of cerebrovascular accidens(CVA) for detection of nature location extension and associated changes. Retrospective analysis was done in 402 patients of clinically suspected CVA who were performed CT in our hospital from December 1985 to December 1987 The results were as foolow: 1. The analysis of CT findings in 402 patients showed 321 cases of CVA 79 cases of normal findings and 2 cases of brain tumors. 2. Among 321 cases of CVA intracerebral hemorrhage was noted in 158 cases cerebral infarction in 126 cases and subarachnoid hemorrhage in 37 cases 3. The common sites of cerebral hemorrhage were basal ganglia in 99 cases especially putamen thalamus in 32 cases and cerebrum cerebellum in 11 cases respectively Cerebral infarction was found chiefly at the areas distributed by the middle cerebral artery: cerebral lobe 55 cases and basal ganglia 51 cases. The aneurysm was the most common cause of subarachnoid hemorrhage and its common site was posterior communicating artery and middle cerebral artery : cerebral lobe 55 cases and cases and basal ganglia 51 cases . The aneurysm was the most common cause of subarachnoid hemorrhage and its common site was posterior communicating artery and middle cerebral artery areas. 4. The common shape of cerebral infarction was oval in basal ganglia and wdged in the cerebrak lobes The contrast enhancement of the cerebral infarction was observed in 10% if cases between the 3rd day and 2nd week after onset and was usually gyral pattern(77.7%) 5. The ameurysm was noted as enhacing nodule on contrast CT in all 14 cases In conclusion the most common cause of CVS is intracerebral hemorrhage in Iri-Korea. High resolution contrast enhanced CT can be used in the diagnosis of the ruptured cerebral aneurysm without the aid of cerebral angiography.