Huge　thermal　losses　through　the　exhaust　system　of　the　refrigerated　truck　offer　an　opportunity　for　lowering　fuel　consumption　by　using　waste　heat　recovery　system.　To　meet　the　demand　of　mixed　load　of　refrigerated　truck,　a　basic　cycle　integrating　the　supercritical　CO2　cycle　and　dual-temperature　refrigeration　cycle　(BSRC)　is　proposed　and　evaluated　from　the　thermodynamic　and　economic　perspective.　Besides,　a　two-phase　ejector　is　introduced　into　the　BSRC　to　improve　cycle　performance　(defined　as　SRCE).　The　proposed　cycles　can　conveniently　change　operation　modes　in　response　to　different　forms　of　energy　demand,　including　combined　power　generation,　refrigeration　and　freezing　(mode　1),　refrigeration　and　freezing　(mode　2),　power　generation　(mode　3).　Detailed　parametric　analysis　and　performance　comparison　between　the　BSRC　and　the　SRCE　are　conducted.　Thereafter,　multi-objective　optimization　is　employed　to　obtain　the　optimal　operating　condition.　Comparison　results　show　that　the　SRCE　presents　superiority　than　BSRC　owing　to　pressure　lift　provided　by　the　ejector.　Besides,　the　advantage　of　employing　ejector　is　more　pronounced　under　mode　2　than　under　mode　1.　The　SRCE　can　provide　an　extra　power　of　28.19　kW　under　mode　1　when　the　basic　need　for　freezing　and　refrigeration　(1.635　kW)　is　satisfied,　accounting　for　11.23%　of　the　engine　power　output.　And　the　exergy　efficiency　and　sum　unit　cost　of　product　of　the　SRCE　are　57.186%　and　13.78　$/GJ,　respectively.　Compared　with　the　BSRC,　the　exergy　efficiency　and　sum　unit　cost　of　product　of　the　SRCE　under　mode　2　are　respectively　increased　by　15.92%　and　decreased　by　14.85%.　While　under　mode　3,　the　SRCE　can　be　regarded　as　a　typical　regenerative　SCO2　cycle,　which　can　provide　considerable　net　power　output　of　28.362　kW.