Copper-based powder metallurgy friction matearial is treated by broad-beam laser to improve its combination property. And its microstructure, hardness, density and the friction and wear characteristics are systematically studied by means of SEM, TEM, XRD, microhardness tester, Brinell hardness tester as well as friction and wear tester.The test results show that after laser surface modification, the α-Cu aggregate occurs edge dissolved and the large aggregates of α-Cu dismember to small mass, and the α-Cu aggregate nanocrystals are generated. The density of friction material increases by 6%, the hardness increases by 12.7%, the wear resistant performance increases by 45%, and the friction coefficient enlarges by 1％.