We report a case of miliary tuberculosis developed after an urgent operation of a rupture of an abdominal aortic aneurysm. We could not detect a pulmonary lesion except old pleurisy on the chest radiological examination from the abdominal aortic aneurysm operation. As tuberculous aortic lesion is very rare at present, we must pay attention to the possibility of a tuberculous aortic lesion even if we do not detect any risk factors.