This　study　presents　an　ORC-HP　combined　system　driven　by　diesel　engine　exhaust.　This　paper　focuses　on　the　feasibility　and　performance　of　the　combined　system　under　heating　mode　to　heat　a　coach.　The　performances　of　the　combined　system　with　different　parameters,　including　condensation　temperature　and　evaporation　pressure　in　ORC　system,　gas　cooler　outlet　pressure,　gas　cooler　outlet　temperature　and　evaporation　temperature　in　HP　system,　have　been　analyzed.　The　results　show　that　the　combined　system　can　fully　meet　the　demand　of　heat　production.　The　optimal　flow　division　ratio　(r(p))　of　0.32　is　selected　by　analyzing　the　system　performance.　Low　condensation　temperature　is　beneficial　to　the　combined　system　performance.　There　exists　a　suitable　range　of　evaporation　temperature,　gas　cooler　outlet　pressure　and　gas　cooler　outlet　temperature　to　achieve　excellent　performance.　The　heating　coefficient　of　performance　(COPh)　shows　a　first　increasing　and　then　decreasing　trend　with　gas　cooler　outlet　pressure,　namely　there　exists　an　optimal　gas　cooler　outlet　pressure　that　achieves　the　maximum　COPh.　The　maximum　total　efficiency,　COPh　and　heating　capacity　can　reach　up　to　48.44%,　4.78　and　176.56　kW,　respectively.　These　results　show　significant　energy　savings　by　applying　the　ORC-HP　combined　system.