The　compared　experimental　tests　were　carried　out　to　investigate　the　operation　performances　of　a　solar　photovoltaic　DC　refrigerator　using　a　phase　change　material　(PCM),　a　photovoltaic　DC　refrigerator　without　PCM　and　a　household　one.　The　photovoltaic　DC　refrigerator　using　PCM　has　many　advantages　for　on-off　frequency　of　the　compressor,　service　factor　and　heat　insulation　time　as　compressor　stopped,　so　to　prolong　the　service　life　of　the　compressor　effectively.　Furthermore,　the　system　is　powered　by　solar　energy　completely　without　consuming　any　grid　electricity　for　running,　and　is　the　＇green　household　electric　appliance＇　on　real　significance,　that　especially　suitable　for　remote　mountains　and　nomadic　areas　of　fresh　food　and　medical　supplies　of　vaccine,　etc.