Graphene film with three-dimensional formed printed wires and preparation method thereof

The invention relates to a graphene film with three-dimensional formed printed wires and a preparation method thereof. The graphene film is characterized in that the graphene film serves as a substrate and is provided with a micro structure, and the micro structure is provided with a plurality of mutually-separated flat raised substrate planes; wire planes are partially imprinted on the raised substrate planes; substrate grooves extending back to an imprinting mould and each provided with two substrate side walls are connected to the side faces of the raised substrate planes in the direction entering the substrate; every two adjacent substrate side walls intersect at the bottom of the corresponding substrate groove; and the substrate side walls are used as bearing faces of the side walls of the printed wires and extend in the direction facing the bottoms of the substrate grooves from the side walls of the printed wires. Far infrared radiation emitted by the graphene film not only has no harm to a human body b