The invention provides a novel decorative bathtub. The surface of a glass product is coated with primer; in order to protect the primer color of the glass product, a protective film is plated on the surface of the glass product; the protective film is coated with a glaze layer; the glaze layer is coated with finish paint so that the decorative effect is enhanced; the gritty glaze layer is printed according to a pre-set pattern, so that the formed pattern has stereoscopic impression and the decorative effect is good.