The present invention relates to a decorative sheet for decorating a surface of a three-dimensional molded material, a method for manufacturing same, and a method for decorating the surface of the molded material using same. The method for manufacturing the decorative sheet includes: a printed sheet preparation step of preparing a printed sheet including a base layer and a surface treatment layer; an boding step of preparing an adhesive layer containing an adhesive and a release film layer by applying the adhesive onto a release film to be layered onto a back side of the adhesive layer, and laminating the printed sheet on a surface of the adhesive layer being bonded; and a drying-solidifying step in which the adhesive layer is changed from a liquid state into a solid state.