The invention discloses an integrated projector and a refrigerating system thereof. The refrigerating system comprises a compressor, a heat exchanger, a water tank and an evaporator of the water tank. The output end of the compressor is connected with the input end of the heat exchanger. The output end of the heat exchanger is connected with the input end of the evaporator. The output end of the evaporator is connected with the input end of the compressor. The refrigerating system design of the projector is optimized, the problem of heat dissipation of a laser source of the projector is solved, and very high market application value is achieved. The integrated projector solves the problem of heat dissipation of a high-brightness laser film projector, and a light machine system, a laser source system and the compressor refrigerating system are integrated in a machine shell. The test shows that the problem of heat dissipation of a 20,000 lumen-level high-definition film projector can be solved, the high-brightness laser film projector does not need a split type independent cabinet for cooling any more, and accordingly the heavy cabinet is removed.