A 69-year-old man with aortic arch aneurysm was admitted for abnormal shadow of chest X-ray. Computed tomography (CT) and aortography revealed aneurysm of aortic arch. His coronary angiogram showed 60% stenosis at LMT (seg 5), 90% stenosis at LAD (seg 7) and 75% stenosis at LCX (seg 11). The graft replacement for arch aneurysm and CABG were performed simultaneously. Postoperative course was good. Postoperative angiogram demonstrated successful reconstruction of the aortic arch and patent three bypass grafts. This patient has been worked healthy 14 months postoperatively.