A　metal　foam　porous-wall　mini-channels　heat　sink　is　proposed　to　solve　the　heat　dissipation　problem　of　linear　Fresnel　reflection　photovoltaic　(LFR-PV)　system.　This　paper　compares　the　heat　transfer　performance　of　the　metal　foam　porous-wall　mini-channels　heat　sink　and　the　rectangular　mini-channels　heat　sink　under　different　working　conditions　by　method　of　experimental　investigation.　The　research　results　show　that　metal　foam　porous　wall　mini　-channels　heat　sink　performs　larger　annular　flow　area　so　that　the　heat　transfer　performance　is　better.　Compared　with　rectangular　mini-channels　of　the　same　size,　the　heat　transfer　coefficient　is　improved　by　135%　in　the　same　size.　Due　to　the　addition　of　metal　foam,　the　local　heat　flow　distribution　in　the　heat　sink　changes,　and　the　wall　temperature　distribution　of　the　heat　sink　is　more　uniform.