In　order　to　improve　the　heat　transfer　performance　of　porous　fins,　the　novel　perforated　dimple/protrusion　fins　are　presented　in　this　paper.　The　flow　and　heat　transfer　characteristics　of　perforated　dimple/protrusion　fins　are　analyzed　by　numerical　simulation　method　and　its　arrangement　are　optimized.　The　results　show　that　the　perforated　dimple/protrusion　fins　enhance　heat　transfer　due　to　the　formation　of　local　jet　and　the　increase　of　vortex　structure　broken　enhance　the　turbulence.　The　heat　transfer　performance　of　the　perforated　dimple/protrusion　fins　are　superior　to　the　porous　ones　under　the　same　Reynolds　number,　with　the　comprehensive　performance　evaluation　criteria　(PEC)　increases　by　31.3%∼55.0%.　The　heat　transfer　performance　of　the　perforated　dimple/protrusion　fins　can　be　improved　better　by　the　reasonable　arrangement　of　perforated　dimple　and　perforated　protrusion.　The　fins　with　both　perforated　dimple　and　perforated　protrusion　structures　have　advantages　over　the　one　with　either　of　two　structures.　The　alignment　arrangements　are　better　than　the　staggered　ones　for　the　fins　with　both　perforated　dimple　and　perforated　protrusion　structures,　while　the　staggered　arrangements　are　better　than　the　alignment　ones　for　the　arrangements　with　either　of　two　structures.　©　2020,　Science　Press.　All　right　reserved.