This study was an analyses of blood supply of the liver in 125 patients who received hepatic arteriography and abdominal aortography from Jan. 1984 at the Dept. of Radiologyof Hanyang Univ. Hosptial. A. Variations in extraheptic artery pattern occured in 106 of 125 cases.; Right hepatic and left hepatic arteries arising from the hepatic artery proper and heaptic artery proper arising from the common hepatic artery. 2. The most common type of variation of extrahepatic artery was replaced right hepatic artery from superior mesenteric artery : 6 of 125 cases. B. Variatonsin intrahepatic arteries 1. The normal intrahepatic artery pattern occurred in 83 of 125 cases.: Right hepatic and left hepatc arteries arising from the hepatic artery proper and middle hepatic artery aising from lower portion of the umbilical point of left hepatic artery. 2. The most common variation of intrahepatic arteries was middle hepatic artery. 3. Among the variation of middle hepatic artery; Right, middl and left hepatic arteries arising from the same location at the hepatic artery proper was the mostcommon type; 17 of 125 cases.