Solar　energy　is　the　most　available　renewable　resource　and　has　great　potential　for　various　applications.　Solar　heat　pumps　are　limited　when　operating　alone　due　to　weather　and　the　unstable　and　intermittent　nature　of　solar　energy.　The　idea　of　combining　a　solar　collector　with　an　air-source　heat　pump　(ASHP)　is　proposed　to　solve　the　problems.　Taking　solar　energy　and　air　energy　as　the　heat　source　of　the　system　can　improve　the　heat　collection　efficiency　and　heating　performance　coefficient　of　the　dual-supply　heating　system　in　realizing　the　efficient　and　stable　operation　of　the　whole　unit.　This　study　investigated　the　application　of　a　solar-air-source　heat　pump　(S/AS-HP)　dual-supply　heating　system　for　a　residential　building　in　Lhasa　and　compared　the　winter　work　performance　and　economic　benefits　of　three　different　heating　forms:　solar-air-source　heat　pump,　air-source　heat　pump,　and　solar-electric　auxiliary　heating　systems.　A　simulation　model　was　established　and　analyzed　using　the　measurement　data.　The　results　show　that　during　the　heating　period,　the　temperature　of　the　primary　side　water　supply　is　stable　at　about　60　degrees　C,　and　the　total　operating　hours　of　the　solar　collector　period　accounted　for　26.9%　of　the　total　hours,　of　which　23.16%　were　independent　operating　hours.　The　average　COPsys　of　the　solar-air-source　heat　pump　is　4.21,　which　greatly　improves　work　performance　compared　with　other　systems,　and　the　annual　cost　is　the　lowest　among　the　three　forms　for　the　same　service　life　at　41,824.6　CNY,　saving　9.6%　and　35.1%　per　year　compared　with　the　air-source　heat　pump　system　and　the　solar-electric　auxiliary　heating　system.　Considering　conditions　in　alpine　regions,　S/AS-HP　systems　are　the　optimal　heating　solution　for　single　buildings.