The present invention provides a decorative sheet having a base film made of a thermoplastic polyester resin and a decorative layer on the base film, and provides a decorated resin molding produced by using the decorative sheet. The base film is not broken in both of MD (a flow direction of film-forming) and TD (a direction perpendicular to MD) and has a stress of 20 N/cm.sup.2 or less in any of MD and TD under a 200% elongation at 80.degree. C. The decorated resin molding includes a resin molding and the decorative sheet which is unitedly laminated to the resin molding. The decorative layer of the decorative sheet faces toward the resin molding. The decorative sheet is suitable for producing the decorated resin molding by a decorating injection molding method.