▎ 摘　　要

NOVELTY - The present invention relates to a flexible and stretchable graphene composite film, comprising a graphene layer and a functional layer formed on the graphene layer; a preparing method of the graphene composite film. The present invention further relates to a method of producing a graphene composite film, comprising: (a) providing a carrier, and a graphene layer is formed on the surface of the carrier; (b) forming a functional layer containing an insulating polymer and a conductive material on a top portion of the graphene film; and (c) dissolving the carrier by an etchant. Without harsh synthesis and complicated fabrication steps, the graphene composite film of the present invention is able to transfer onto various substrates, and is largely beneficial to various electronic applications.