These paper is an analyses of 110 patients who received abominal aortotraphy and selective organ angiography from July 1977 to August 18979 at Department of Radiology of Yonsei Medical Center. 1. The most frequent site of bifurcation of the abomminal aorta was the 4th intervertebral disc level, occuring in 22 of 50 cases(42.3%). 2. The celiac trunk arose most frequently at the level of the 12 th thoracic interverterbral disc , occuring in 11 of 52 cases(21.2%). 3. The superior mesentric arterly aorse most frequent at the level of the upper third of the 1 st lumbar vertebr, occuring in 8 of 30 cases(26.7%). 4. The right renal artery most frequently arose at level of the middle third of the 1st lumber vertebra, occuring in 17 of 70 cases(24.3%) and the left renal artery occured most frequently in 1 st lumbar vertebral disc level, 14 of 70 cases(20%). 5. Both renal arteries most commonly arose symmertrically as seen in 37 of 70 cases(52.6%). Case in which the right side arose at higher level than the left occured in 28 of 70 cases(40.6%). 6. Accessory renal arteries occured in 19 of 70 cases(27.1%). 7. The most common form of the celian trunk in which it divides into left gastric, splenic and common hepatic arterises was seen in 30 of 38 cases(78.9%). 8. The normal hepatic artery pattern in which it divides into right, middle and left hepatic artery occured in 23 of 38 cases(60.5%). A replaced right hepatic artery was seen in 2 of 35 cases(5.3%), and an accessory right hepatic artery also in 2 of 38 cases (5.3%).