In　this　study,　a　two-dimensional　full　cell　analytical　model　of　a　proton　exchange　membrane　fuel　cell　is　developed.　The　analytical　model　describes　electrochemical　reactions　on　the　anode　and　cathode　catalyst　layer,　reactants　diffusion　in　the　gas　diffusion　layer,　and　gases　flow　in　the　gas　channel,　etc.　The　analytical　solution　is　derived　according　to　the　basic　physical　equations.　The　performance　predicted　by　the　model　is　in　good　agreement　with　the　experimental　data.　The　results　show　that　the　polarization　mainly　occurs　in　the　cathode　side　of　the　proton　exchange　membrane　fuel　cell.　The　anodic　overpotential　cannot　be　neglected.　The　hydrogen　and　oxygen　concentrations　decrease　along　the　channel　flow　direction.　The　hydrogen　and　oxygen　concentrations　in　the　catalyst　layer　decrease　with　the　current　density.　As　predicted　by　the　model,　concentration　polarization　mainly　occurs　in　the　cathode　side.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.