Fuel　cells　have　attracted　extensive　attention　throughout　the　world　in　recent　years　for　their　high　efficiency　and　high　environmental　compatibility.　Temperature　plays　a　key　role　in　achieving　high　performance　of　fuel　cells　because　it　deeply　influences　the　activity　of　catalyst,　dehydration　of　solid　polymer　membrane,　mass　transfer　and　heat　management　of　fuel　cells.　The　temperature　distribution　has　close　relationship　with　current　density　distribution　and　lifetime　of　fuel　cells　because　the　uniformity　of　temperature　distribution　is　a　quite　important　problem　for　fuel　cells.　In　this　paper,　a　review　of　temperature　measurement　technologies　that　can　be　used　to　measure　temperature　distribution　of　fuel　cells　was　presented.　The　measurement　of　cathode　exterior　surface　temperature　fields　of　a　hydrogen　proton　exchange　membrane　fuel　cell　under　various　operational　conditions　was　conducted　by　using　the　technology　of　infrared　thermal　imaging.　The　proton　exchange　membrane　fuel　cell　structure　was　designed　for　uniformity　of　input　heat.　A　NEC　TH5102　thermo　tracer　was　applied　to　measure　the　cathode　exterior　surface　temperature　distributions　of　the　cell　with　5cm2　active　area.　The　experimental　results　showed　that　the　infrared　thermal　imaging　is　an　effective　method　to　measure　the　exterior　temperature　fields　of　the　PEMFC.　The　cathode　temperature　distributions　of　the　cell　varied　with　cell　temperatures　and　flow　rates.