▎ 摘　　要

NOVELTY - A metal nanoparticle modified graphene composite material preparation method involves mixing graphite metal nano-particles and ethanol in a mass ratio of 1-3:50-100:500-1000 to obtain mixed solution, and mixing the mixed solution at a centrifuge speed of 12000-16500 rounds/minute for greater than or equal to 10 minutes to obtain the graphene composite material, where the graphene sheet prepared by modification of the metal nanoparticles has length of 2-4 mu m, width of 1-3 mu m and thickness of less than or equal to 1 nm, and the metal is silver, gold, palladium, platinum, copper, iron, cobalt or nickel. USE - Method for preparing a metal nanoparticle modified graphene composite material. ADVANTAGE - The method enables preparing the metal nanoparticle modified graphene composite material in a rapid and convenient manner.