Abstract: According to the composition, structure and chemical bond characteristic of graphite, the unique physical and chemical properties, functional processing technology, new functional products and applications of graphite were described. In this paper, the research progress of the preparation technology of expanded graphite, graphite nano-flakes and graphene, and the application of graphite functionalized products in sealing materials, adsorption materials, batteries and energy storage materials, gas sensors and functional coatings were discussed. In view of the current situation of the development of graphite functional materials industry, it is urgent to formulate the corresponding evaluation standards of new graphite functional materials and improve the application technology of high-end graphite materials, which is of great significance to the development of graphite strategic non-metallic mineral resources.