A method of manufacturing a metal-graphite brush material for a motor, which allows high-density formation of copper particles on the surfaces of graphite particles. The method: attaches copper complex to graphite particles; heat-treats the graphite particles attached with the copper particles, thereby to pyrolyze the copper complex to form copper particles on the surfaces of the graphite particles; forms the graphite particles having the copper particles formed thereon, together with a resin, into a formed product; and reduction-sinters the formed product under a reducing atmosphere to pyrolyze the resin, thereby to form a sintered body and also to reduce copper oxide formed in surface layers of the copper particles during the heat-treating.