The invention discloses a novel graphene membrane electrode preparation method which comprises the following steps: mixing and stirring 8-18 parts by weight of a graphite oxide, 1-3 parts by weight ofa chelating agent, 2-4 parts by weight of a titanium source and 2-4 parts by weight of a manganese source with 20-30 parts by weight of water with a slight acid pH value for 10-20 minutes, and leaving to stand for 20-30 minutes. The method has the beneficial effects that by adopting the novel graphene membrane electrode preparation method disclosed by the invention, not only are a great amount ofimpurities oxidized and removed, but also a graphite oxide dispersion liquid is concentrated, so that the concentration of graphite is increased, the adhesion degree of graphene on a suction filtration membrane is increased, and loss of graphene on the suction filtration membrane is reduced; in addition, as a graphene membrane and the suction filtration membrane are separated after lubrication ofhigh-temperature grease, the graphene membrane is not easily damaged.