A　novel　conjugated　polymer　containing　electron　transport　groups　with　high　electron　affinity,　denoted　POXD　was　synthesized　upon　polycondensation.　The　polymer　was　characterized　by　Fourier　transform　infrared　(FTIR)　spectra　and　1H　nuclear　magnetic　resonance　(1H　NMR)　spectroscopy.　Furthermore,　the　conjugated　polymer/graphene　(POXD/RGO)　composite　film　was　prepared,　which　was　subsequently　used　as　the　support　for　the　electrodeposition　of　platinum.　The　microstructure　and　morphology　of　the　prepared　samples　were　characterized　by　X-ray　photoelectron　spectroscopy　(XPS)　and　field　emission　scanning　electron　microscopy　(FE-SEM).　The　electrocatalytic　activity　for　the　oxidation　of　methanol　was　investigated　through　cyclic　voltammogram　method.　The　POXD/RGO　composite　film　can　facilitate　the　electrodeposition　of　Pt　nanoparticles　compared　with　graphene　(RGO)　support.　The　POXD/RGO/Pt　composite　exhibits　more　excellent　electrocatalytic　property　for　the　oxidation　of　methanol,　such　as　lower　oxidation　potential　and　higher　current　intensity,　which　might　be　attributed　to　the　high　electron　affinity　of　the　polymer　and　the　interaction　of　the　Pt　nanoparticles　with　polymer.　POLYM.　COMPOS.,　2012.　(c)　2012　Society　of　Plastics　Engineers