To improve an interlaminar adhesive strength by forming an adhesive layer laminated between a resin layer made of an amorphous polyolefin having a specific heat distortion temperature and a resin layer made of a polypropylene, of an ethylnene-propylnene copolymer, ethylene-vinyl acetate copolymer and the like.

The multilayer sheet for packaging a high moistureproof pharmaceutical preparation is constituted by laminating an adhesive layer made of one of hydrides of an ethylene-propylene copolymer, an ethylene-vinyl acetate copolymer, an ethylene-methyl methacrylate copolymer or styrene-isoprene- styrenetriblock copolymer or a hydride of a styrene-butadiene-styrene triblock copolymer, and a resin layer made of a polypropylene. Thus, an interlaminar adhesive strength of the multilayer sheet can be strengthened. And, a physical property balance of an impact resistance, a stress crack resistance and the like are upgraded.