▎ 摘　　要

NOVELTY - Preparing graphene film comprises providing oxidized graphene solution, drying the solution to obtain a layer of film, and then maintaining for more than 1 hour under protection of gas and at high temperature, and reducing the oxidized graphene to obtain the graphene film. USE - Method for preparing graphene film. ADVANTAGE - The method is simple and convenient to operate, has no pollution caused by chemical reduction, and protects the environment. The prepared graphene film has a resistivity of 1500 Ohms/sq, which is smaller than the graphene film prepared by the chemical reducing method used currently, and light transmission under the wavelength of 780 nm of 70%, which is similar to fluorine doped tin oxide (FTO) and indium tin oxide (ITO); and can replace the traditional conductive glass. It has also high film conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) transparent material attached with graphene film comprising a substrate attached with the graphene film; and (2) preparing transparent material attached with graphene film comprising firstly subjecting the substrate to hydrophilic treatment, and then depositing a layer of oxidized graphene solution on the substrate, drying, and maintaining for more than 1 hour under protection of gas and at high temperature, and reducing the oxidized graphene.