We describe a 52 year old woman who had an aneurysm involving the common hepatic artery directly originating from the aorta. It was successfully treated by aneurysmectomy without needing the arterial reconstruction. An aneurysm of the common hepatic artery that has an anomalous origin from the aorta is very rare and only 4 cases including the present case were reported in Japanese literature on our survey. The features and management of hepatic aneurysm are discussed.