Solar　energy　utilization　and　heat　pump　are　common　technologies　of　renewable　energy　utilization　for　solving　the　problem　of　energy　crisis　and　environmental　pollution　in　present.　This　paper　proposed　a　novel　PV/T-air　composite　heat　pump　hot　water　system.　The　system　was　comprised　of　independently　developed　flat　plate　solar　PV/T　collector　based　on　micro-channel　heat　pipe　array　and　air　source　heat　pump,　which　were　combined　by　a　new　composite　evaporator.　The　performance　of　the　system　were　experimentally　studied,　COP　of　heat　pump　reduced　from　5.61　to　1.69　and　the　average　was　3.03.　Comprehensive　COPsys　of　PV/T-air　composite　heat　pump　system　ranged　from　6.07　to　1.33,　the　average　was　2.99.　The　result　showed　the　system　was　worthy　of　promotion　and　application.　(C)　2015　The　Authors.　Published　by　Elsevier　Ltd.