An aortic stent includes a main tube including a main section having an outer diameter about equal to an inner diameter of a blood vessel of a descending aorta, and first and second tube bifurcations branched from the main section wherein the first tube bifurcation includes a first membrane for dividing inside of the first tube bifurcation into first and second spaces, and the second tube bifurcation includes a second membrane for dividing inside of the second tube bifurcation into third and fourth spaces and at least one tube branch retained in the first, second, third or fourth space so that each tube branch has one end retained in the main tube and the other end in fluid communication with artery.
