The invention relates to a preparation method of a bionic intelligent superhydrophobic graphene film, and aims to solve the problem that at present, no multifunctional superhydrophobic film combined with own characteristics of graphene exists. The preparation method comprises the following steps: 1, preparing graphene oxide; 2, preparing a graphene oxide emulsion; and 3, preparing the superhydrophobic graphene film. The superhydrophobic graphene film prepared by the preparation method provided by the invention has a strong water droplet adsorbing force; moreover, based on own properties of graphene, the graphene film has a self-sensing function and can sense the position of a water droplet; in addition, the graphene film has a superhigh electric heating speed at low voltage, which can reach about 18 DEG C/s; and the superhydrophobic graphene film can be applied to the field of intelligent superhydrophobic surfaces.