Graphene coating heating sheet combined with circuit board structure and application method thereof

The invention provides a graphene coating heating sheet combined with a circuit board structure and an application method thereof, and the key points of the technical scheme are that the graphene coating heating sheet comprises a first substrate, a second substrate superposed with the first substrate, a circuit layer arranged between the first substrate and the second substrate, and a wiring plug arranged on the first substrate and electrically connected with the circuit layer, the bottom surface of the second substrate is coated with a graphene heating layer, and the bottom surface of the second substrate is also provided with a plurality of electrode plates electrically connected with the graphene heating layer and the circuit layer; when the graphene coating heating sheet is applied, the graphene coating heating sheet is pasted and installed on a conductive heating area through insulating heat-conducting glue or heat-conducting resin, the graphene coating heating sheet can be directly installed on the insu