Hemobilia is defined as a hemorrhage in the biliary tract and is most commonly associated with accidental or iatrogenic trauma. A case is herein reported of hemobilia developed in a hepatic artery aneurysm after biliary stenting was performed in patient with cholangiocarcinoma. A 63-year-old man was admitted with melena and had history of cholangiocarcinoma with an intraductal biliary stent. A hepatic artery angiography revealed two pseudoaneurysms at the common hepatic artery and right hepatic artery. Transarterial embolization with gelfoam was successfully received and hemobilia was not developed later. (Korean J Gastrointest Endosc 19: 671∼675, 1999)