We studied 828 cases with occlusive cerebrovascular disease who were admitted to our hospital over these 5 years in relation to surgical management. Cerebral angiography including digital subtraction angiography was carried out in 770 cases. Surgical management was carried out in 110 cases; 77 cases of carotid endarterectomy (CEA), 18 cases of EC-IC bypass and 15 cases of external decompression. The ratio of surgical management was 13. 3% of all cases admitted. The mortality and the morbidity were 5.4% and 1.8% respectively. The number of EC-IC bypass has decreased gradually after the reports of international cooperative study concerning with EC-IC bypass in 1985. But the number of CEA has increased gradually.