Accurate localization and correct diagnosis of brain abscess will lead to specific decompressive therapy without contamination of the ventricular system or meninges. It is well known that angiography, pneumoventriculography and brain scan are used to make the diagnosis. Angiographic findings of 11 cases of brain abscess were studied and analyzed which were confirmed by operation during admission th Seoul National University hospital for recent 8 years. The results of analysis are as follow: 1. The ages of the 11 cases are from 7yrs to 42 yrs and 10 of them are male. For the sources of infection: hematogenous meatastasis from unknown origin are in 4 cases, chronic ottis media in 3 cases, and congenital heart disease is in 1 case. The diagnosis of all cases are confirmed with operation. 2. Angiographies provide accurate localization of space occupying lesion with vascular displacement in all cases and capsular stain and ripple sign as characteristic findings of brain abscess are definite in 4 cases and 1 case respectively. 3. Localized dilatation of small artery are seen in 6 cases and delayed arterial emptying are found in 3 cases. These findings are not characteristic for brain abscess but they provide much aid in making correct diagnosis. 4. Based on above results, accurate diagnosis of brain abscess in angiography is possible by detection of findings such as vascular displacement suggesting space occuying lesion, capsular stain, ripple sign, vascular changes and flow abnormalities.