A　solar-air　energy　dual-source　collector　evaporator　based　on　flat　heat　pipe　and　a　new　direct　expansion　heat　pump　system　composed　of　it　are　designed，experimental　research　and　analysis　are　carried　out　on　it.　The　experiment　tests　the　uniform　temperature　and　thermal　conductivity　of　the　flat　heat　pipe　under　the　condition　of　low　temperature　heat　extraction　by　the　refrigerant，under　the　operating　conditions　of　the　heat　pump　the　surface　temperature　distribution　of　the　heat　collector　evaporator，the　photoelectric　photothermal　performance　and　the　heat　pump　system　under　different　weather　conditions　and　different　operating　performan　of　modes.　The　results　show　that　the　equivalent　thermal　conductivity　of　flat　heat　pipe　can　reach　6.8×105　W/　（m·℃）at　low　temperature，the　maximum　longitudinal　temperature　difference　during　the　operation　of　the　collector　evaporator　is　3.9　℃，In　summer，the　average　COP　of　solar　heating　mode　in　sunny　weather　is　3.62；the　solar-air　dual-source　mode　operating　in　low-irradiation　cloudy　days　increases　the　heat　collection　power　per　unit　area　by　18.8%　and　the　system　average　COP　by　5.7%　compared　with　the　solar　mode.　On　nights　without　irradiation，the　operating　air　source　mode　system　average　COP　is　2.54.　©　2023　Science　Press.　All　rights　reserved.