Hepatic artery aneurysms are rare lesions and have ifficulty in diagnosis and treatment. Upper abdominal pain accompanied by recurrent gastrointestinal bleeding can be a suspicious sign of the hepatic artery aneurysm. Ultrasonography is the screening diagnostic tool, but preoperative evaluation of the aneurysm and collaterals to the liver is well accomplished by the angiography. Surgical therapy is needed because the aneurysms have a significant propensity toward rupture and its high mortality. Maintanence of the hepatic blood flow after artery ligation should be considerd, but hepatocellular survival is possible due to collaterals, increased oxygen uptake from portal vein. Percutaneous transcatheter embolization is alternative to surgery and has gained clinical application in recent years, especially intrahepatic aneurysm and active bleeding. We experienced a 53-year old woman who underwent recurrent upper gastrointerstinal bleeding and duodenal ulcer was suspected by endoscopy. She was intractabel to the surgery to ulcer bleeding and suspicious mass was paepated on the and portion of the duodenum, so, angiography was done and revealed that the thumb tip sized proper hepatic artery aneurysm was presnet. We treated it successfully with transcatheter coil embolization & report it now.