Disclosed herein is a stent graft (10, 10a, 10b, 20, 30, 30a, 40) as a repairing material for lumens such as aorta and other blood vessels and trachea) of a living body. It includes warp yarns (14) of plastic material and weft yarns (12, 42) including filaments of at least one of shape-memory plastic, shape-memory alloy, and super-elastic metal, the warp yarns and weft yarns being interwoven into a tubular shape such that the weft yarns (12, 42) extend in the circumferential direction and the warp yarns (14) extend in the axial direction, with either or both of the warp yarns (14) and weft yarns (12, 42) being formed from yarns capable of swelling by body liquid or from yarns with coating (16) capable of swelling by body fluid.
