A　time-controlled　solar　assisted　air　source　heat　pump　(SAHP)　system　was　proposed　in　accordance　with　the　climate　characteristics　of　Xinjiang.　Combined　with　an　actual　project　of　rural　office　building　in　Xinjiang,　the　time-controlled　SAHP　system　test　study　was　carried　out　.　Test　results　showed　that,　on　a　typical　day　in　the　slightly　cold　period　(SCP),　the　heat　collection　efficiency　of　the　solar　collectors　was　68.12%,　the　solar　energy　utilization　rate　was　84.22%,　and　the　indoor　temperature　increased　by　5.2　degrees　C.　On　a　typical　day　in　the　bitter　cold　period　(BCP),　the　time-controlled　SAHP　system　could　provide　more　than　70%　of　the　heating　consumption.　Furthermore,　the　feasibility　of　the　time-controlled　SAHP　system　was　evaluated　based　on　the　data　of　the　SAHP　system　and　the　traditional　coal-fired　boiler　system　in　the　same　period.　In　comfort,　the　indoor　temperature　maintained　at　14-20.2　degrees　C,　and　the　average　temperature　was　18　degrees　C.　In　economy,　the　coal　consumption　of　the　time-controlled　SAHP　system　was　18.34　kg/m(2)　during　the　heating　period,　which　was　25.0%　of　that　of　the　traditional　heating　method.　In　environmental　protection,　the　time-controlled　SAHP　system　could　reduce　CO2　emissions　by　149.10　kg/m(2),　NOx　emissions　by　4.47　kg/m(2),　and　SO2　emissions　by　2.24　kg/m(2)　during　the　heating　period.