Effective　thermal　management　is　critical　for　the　safe　and　efficient　operation　of　proton　exchange　membrane　fuel　cells　(PEMFC).　The　small　temperature　difference　between　the　stack　and　the　environment　brings　greater　chal-lenges　to　the　cooling　system.　This　study　proposes　the　integration　of　micro　heat　pipe　arrays　(MHPA)　into　bipolar　plates　for　thermal　management　of　small-power　air-cooled　PEMFC.　The　heat　transfer　performance　of　2　mm　MHPA　under　air-cooled　conditions　is　experimentally　studied,　and　a　comparative　study　is　conducted　on　the　actual　application　of　air-cooled　PEMFC.　The　results　show　that　the　MHPA　can　reach　a　steady　state　within　600-900　s　when　the　heating　power　is　changed.　The　minimum　thermal　resistance　of　the　MHPA　is　0.53　K/W,　the　uniform　temperature　distribution　in　the　evaporation　zone　is　very　uniform　within　2　K,　showing　a　small　heat　transfer　thermal　resistance　and　good　temperature　uniformity　performance.　When　the　maximum　temperature　inside　the　stack　does　not　exceed　65　celcius,　the　maximum　output　power　of　the　MHPA-PEMFC　is　25.66%　higher　than　that　of　the　traditional　air-cooled　PEMFC,　and　the　maximum　temperature　difference　inside　the　stack　is　reduced　by　50.1%.　The　results　of　this　study　provide　a　theoretical　basis　for　the　application　potential　of　MHPA　in　PEMFC　thermal　management.