Pt/CeO 2 –graphene catalyst was rapidly prepared by an efficient one step microwave-assisted process using ethylene glycol (EG) as a green reducing agent. Platinum particles are better dispersed on CeO 2 –graphene composite support with smaller sizes. In electrochemical test, Pt/CeO 2 –graphene exhibited higher and more durable electrocatalytic activities for methanol oxidation than a comparative Pt/graphene catalyst. The enhanced performance might ascribe to the general promotion of CO ads electrooxidation reaction kinetics by the addition of CeO 2 .