In　this　paper,　a　solar-driven　heating　and　cooling　system　integrated　with　air　source　heat　pump　is　designed　and　applied　to　the　ultra-low　energy　building.　The　heat　and　electricity　from　the　compound　parabolic　concentrated-photovoltaic　thermal　collector　are　fed　to　air　source　heat　pump　to　increase　the　efficiency　of　the　air　source　heat　pump.　Integrating　energy,　social,　environmental,　and　economic　benefits　of　the　system　in　the　whole　life　cycle,　an　emergy-based　optimization　method　is　adopted　to　obtain　the　optimal　configuration　of　the　compound　parabolic　concentratedphotovoltaic　thermal　collector.　Under　the　optimal　configuration,　the　emergy　performance　of　the　designed　system　is　analyzed,　and　the　monthly　emergy　performance　and　the　influence　of　investment　cost　and　solar　irradiation　on　the　emergy　performance　are　discussed.　The　optimization　results　show　that　when　the　photovoltaic　coverage　ratio　is　1.0,　the　total　emergy　consumed　by　the　designed　system　is　the　lowest,　2.64　x　1016　seJ/y,　which　saves　9.96%　of　emergy　compared　with　the　reference　system.　The　environmental　load　ratio,　emergy　sustainability　index,　emergy　investment　ratio,　and　emergy　yield　ratio　under　optimal　configuration　are　126.62,　0.021,　0.62,　and　2.64,　respectively.　The　emergy　investment　ratio　and　environmental　load　ratio　in　January　are　the　highest,　which　are　0.28　and　100.09,　respectively,　while　the　emergy　yield　ratio　and　emergy　sustainability　index　in　May　are　the　largest,　which　are　15.02　and　0.179,　respectively.　The　environmental　load　ratio　and　emergy　investment　ratio　are　positively　correlated　with　the　annual　investment　cost,　while　the　emergy　sustainability　index　and　emergy　yield　ratio　are　negatively　correlated　with　the　annual　investment　cost.　The　emergy　optimization　facilitates　a　better　selection　of　building　energy　supply　systems.