▎ 摘　　要

NOVELTY - Preparation of reduced graphene oxide film comprises transferring the graphene oxide to electron microscope carrier net, and reducing. USE - The method is useful for preparation of reduced graphene oxide film. ADVANTAGE - The reduced graphite oxide film has stronger conductivity, so it can reduce the sample drift problem caused by beam irradiation; is thin, so the background noise of the transmission electron microscope photograph is lower; and is convenient in cryo-electron microscope sample preparation and later three-dimensional reconstruction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a reduced graphene oxide film.