Provided are: a water-absorbent carrier for wet heat sterilization in which usage in a small space is possible and in which there is no risk of producing foreign matter a method for manufacturing the water-absorbent carrier a medical article and a wet heat sterilization method. A water-absorbent carrier obtained by embedding a water-absorbent substance (any one of silica gel, zeolite, and polyacrylic acid) in a synthetic resin. The water-absorbent carrier can be molded to a granular shape or a sheet shape. The water-absorbent carrier can be manufactured by impregnating the water-absorbent substance with a water-soluble substance, then drying the water-absorbent substance, embedding the water-absorbent substance in a thermoplastic synthetic resin, and performing cleaning to remove the water-soluble substance. The water-absorbent carrier can also be manufactured by dispersing a non-water-soluble synthetic resin in a carrier fluid, mixing the water-absorbent substance therein, placing the mixture in a mold, and causing the carrier fluid to volatilize. The water-absorbent carrier can be provided and packaged in a closed space to be sterilized, whereby a medical article can be provided. In particular, the water-absorbent carrier carrying water is disposed in a region that water vapor cannot readily reach. The water-absorbent carrier is disposed in a closed space to be sterilized, and wet heat sterilization is performed. The present invention makes it possible to perform high-pressure water vapor sterilization at a wet heat temperature exceeding 100ºC.Linvention concerne un support absorbant leau pour une stérilisation de chaleur humide, dans lequel lusage dun petit espace est possible, et dans lequel il ny a aucun risque de production de corps étranger un procédé pour fabriquer le support absorbant leau un article médical et un procédé de stérilisation par chaleur humide. Un support absorbant leau est obtenu par intégration dune substance support absorbant leau (lun q
