The utility model relates to an energy technical field especially relates to a combined cooling, heating and power system, include: prime mover, organic rankine cycle ORC system, first generator and first heat exchanger, the output of prime mover is connected with first generator, organic rankine cycle ORC system and first heat exchanger, the output of ORC system is connected with energy device, prime mover for heat output to the ORC system and the first heat exchanger that drive the electricity generation of first generator and produce prime mover, the ORC system for to follow heat that prime mover acquireed converts energy device's power into, energy device for the energy is prepared to power through the ORC system output, first heat exchanger for heat according to acquireing from prime mover heats. Consequently, absorb the waste heat output power that prime mover produced through the ORC system and give compression -type refrigeration or the equipment of heating, and lower absorbed refrigeration or the equipment of heating of out of use efficiency to put forward high energy's the efficiency of preparing.