▎ 摘　　要

NOVELTY - A graphene composite filter material comprises graphene raw material, photocatalytic coal, cold catalyst, and nano-mineral crystal or activated carbon or nano-mineral crystal and activated carbon mixture with any ratio. USE - Graphene composite filter material. ADVANTAGE - The graphene composite filter material has excellent antibacterial function and better effect of graphite filter material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene composite filter material, which involves, adding light to the coal and cold catalyst to the water and stirring evenly, adding graphene to the solution and ultrasonically mixing, adding nano-mineral crystal or activated carbon or a mixture of nano-mineral crystal and activated carbon to the solution, sequentially stirring, filtering water and drying, naturally air-drying the dried product, cooling, bagging and storing.