A　new　type　solar　photovoltaic　and　air　source　heat　pump　composite　building　energy　supply　system　was　designed　for　the　purpose　of　saving　energy.　The　system　can　realize　a　variety　of　functions　needed　for　building,　including　the　annual　power　supply,　heating　in　winter,　as　well　as　cooling　in　summer.　1HP　rotor　compressor　is　used　in　the　heat　pump　system,　and　the　other　parts　of　the　heat　pump　match　the　1HP　heat　pump.　In　this　paper,　the　operation　mode　of　PV/T　and　dual　heat　source　heat　pump　operating　at　the　same　time　in　winter　was　experimental　studies　and　the　performance　of　the　system　was　analyzed.　Results　shows　that　in　the　environmental　conditions　of　the　average　temperature　of　4.3　degrees　C　and　the　average　irradiance　of　644　W/m2,　the　maximum　of　generating　efficiency　reaches　15.3%,　and　the　maximum　of　generated　power　reaches　827W,　and　the　average　generating　efficiency　is　12.1%,　and　the　average　of　heat-collecting　efficiency　is　38.8%,　and　the　average　of　comprehensive　efficiency　of　PV/T　system　is　50.9%,　and　instantaneous　COP　of　the　heat　pump　changes　from　2.3　to　3.0,　and　the　average　COP　is　2.6.　(C)　2017　The　Authors.　Published　by　Elsevier　Ltd.