Graphene heating membrane and preparation method thereof

The invention provides a graphene heating membrane. The membrane comprises an insulating substrate, electrodes arranged on the insulating substrate and a graphene heat conduction film, the electrodes comprise a positive electrode circuit, a negative electrode circuit, a positive main electrode, a negative main electrode, a plurality of positive auxiliary electrodes and a plurality of negative auxiliary electrodes, the positive main electrode and the plurality of positive auxiliary electrodes are connected through the positive electrode circuit, the negative main electrode is connected with the plurality of negative auxiliary electrodes through the negative electrode circuit, a heating area is formed between the adjacent positive auxiliary electrode and negative auxiliary electrode, the power density of each heating area is the same, and the graphene heat conduction film is not connected with the positive main electrode and the negative main electrode. The invention also provides a preparation method. Accordin