Based　on　analyzing　the　working　principle　of　quasi　grid　energy-saving　technology,　the　composition　and　principle　of　air　conditioning　system　driven　by　solar　photovoltaic　generation　and　city　power　grid　were　discussed.　The　photovoltaic　properties　of　solar　cells,　the　working　principle　of　storage　battery,　the　working　characteristic　of　DC　compressor,　the　energy　efficiency　and　economy　of　the　solar　energy　air　conditioner　were　analyzed,　respectively.　Setting　up　the　experimental　platform,　the　compared　experimental　tests　are　carried　out　with　the　conventional　air　conditioner.　The　experimental　results　and　the　economic　analysis　showed　that　the　solar　energy　air　conditioner　can　save　mains　electricity　more　than　70%　at　summer　daytime　and　40%-78%　in　a　whole　day.　The　comprehensive　energy　efficiency　ratio　is　3　times　of　the　conventional　air　conditioner.　In　order　to　ensure　the　energy　saving　ability,　the　suggested　maximum　operating　time　is　4　hours　at　daytime　and　2　hours　at　night.　©　2017,　Editorial　Board　of　Acta　Energiae　Solaris　Sinica.　All　right　reserved.