A new Pd-Cu bimetallic nanoparticlesgraphene nanohybrid has been prepared via a facile synthetic method. The Cu nanoparticles were anchored on the graphene nanosheets by a reduction chemical route. Then, by a partial galvanic replacement reaction, Pd-Cu bimetallic nanoparticles graphene nanohybrids were achieved. The prepared nanohybrids were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and electrochemical methods.