It is known that the prognosis of preductal type coarctation of the aorta is poor because cardiac malformation is frequent in these cases. There have been very few reports on adult cases of the coarctation. We have recently carried out aneurysmectomy and reconstructed the descending aorta by a 30mm Veri-Soft tube graft for one adult case of descending aortic aneurysm associated with coarctation of the aorta. The patient was 49-year-old female. Segmental stenosis 5cm in length was demonstrated in the thoracic descending aorta immediately below the bifurcation of the left subclavian artery. The poststenotic dilatation was shown at the distal portion of the segmental stenosis. The postoperative clinical course was uneventful.