Atherosclerosis and infectious diseases are the most common cause. Ultrasonography, computerized tomography, and arteriography are used to make the diagnosis and treatment is achieved by surgery or percutaneous techniques. We herein report a SMA aneurysm detected in a 39 years old patient with complaint of abdominal pain. The surgical treatment involved the aneurysm ligation and revascularization with greater saphenous vein interposition graft.