Provided are: a simple production method for a medical and cosmetic sheet which has excellent adhesion to the skin, etc., and excellent wearing comfort, and can gradually release a functional component and thereby continuously supply the component to an area to be treated； and a medical and cosmetic sheet produced by the production method. This production method of a medical and cosmetic material comprises a step for molding a raw material containing a water-soluble salt of a first polyanionic polysaccharide having a viscosity average molecular weight of 10,000 or less, and a water-soluble salt of a second polyanionic polysaccharide having a viscosity average molecular weight of 50,000 or more, and thereby obtaining a water-soluble molded article. This medical and cosmetic material is produced by said production method.
