It is an object of the invention to provide a prosthetic material for living organs, which can sufficiently withstand the arterial pressure and thereby can prevent leakage of blood or rupture of blood vessels, and which serves as a scaffold for vascular tissue regeneration, and does not necessitate repeated surgeries or the like. The invention is a prosthetic material for living organs, which comprises a laminate including a film layer and a porous layer, said film layer comprising a bioabsorbable material, said porous layer comprising a bioabsorbable material.