Although Behcet`s disease, characterized by oro-genital ulceration and ocular abnormalities, is rare and unfamiliar disease to thoracic surgeon, one must remember that it can cause serious complications on the vascular system such as thrombophlebitis,thrombotic obstuction and aneurysm.We report a case of multiple arterial aneurysms with Behcet`s disease. This 31 year-old female had five times surgical interventions during short period[19 months]. 6 aneurysms were developed in this case, 3 were spontaneous aneurysms, 2 were anastomotic aneurysms and 1 was false aneurysm due to arterial puncture.