A refrigerator comprising: a compressor (400, 500) configured to compress a refrigerant; a condenser configured to condense the refrigerant; a first evaporator that is configured to evaporate the refrigerant condensed by the condenser, the evaporated refrigerant being configured to cool a refrigerating compartment; a second evaporator that is configured to evaporate the refrigerant condensed by the condenser, the evaporated refrigerant being configured to cool a freezing compartment; a first heat exchanger coupled to the first evaporator; a refrigerating-compartment expansion device that is coupled to the first heat exchanger and that is configured to expand the refrigerant and provide the expanded refrigerant to the first heat exchanger; a second heat exchanger coupled to the second evaporator; and a freezing-compartment expansion device (520, 540) that is coupled to the second heat exchanger and that is configured to expand the refrigerant and provide the expanded refrigerant to the second heat exchanger, wherein the first heat exchanger is configured to cool the second heat exchanger, the compressor includes a first compressor and a second compressor, the second compressor being configured to compress the refrigerant evaporated by the second evaporator, the first compressor being configured to compress the refrigerant evaporated by the first evaporator and the refrigerant compressed by the second compressor, characterized in that the freezing-compartment expansion device (520, 540) includes a first expansion device coupled to an inlet side of the second heat exchanger, and a second expansion device coupled to an outlet side of the second heat exchanger, and the second heat exchanger is provided between the first and second expansion devices (520, 540), to allow the refrigerant decompressed by the first expansion device to be cooled by the second heat exchanger and to be decompressed by the second expansion device. a compressor (400, 500) configured to compress a refrigerant; a condenser configured to condense the refrigerant; a first evaporator that is configured to evaporate the refrigerant condensed by the condenser, the evaporated refrigerant being configured to cool a refrigerating compartment; a second evaporator that is configured to evaporate the refrigerant condensed by the condenser, the evaporated refrigerant being configured to cool a freezing compartment; a first heat exchanger coupled to the first evaporator; a refrigerating-compartment expansion device that is coupled to the first heat exchanger and that is configured to expand the refrigerant and provide the expanded refrigerant to the first heat exchanger; a second heat exchanger coupled to the second evaporator; and a freezing-compartment expansion device (520, 540) that is coupled to the second heat exchanger and that is configured to expand the refrigerant and provide the expanded refrigerant to the second heat exchanger, wherein the first heat exchanger is configured to cool the second heat exchanger, the compressor includes a first compressor and a second compressor, the second compressor being configured to compress the refrigerant evaporated by the second evaporator, the first compressor being configured to compress the refrigerant evaporated by the first evaporator and the refrigerant compressed by the second compressor, characterized in that the freezing-compartment expansion device (520, 540) includes a first expansion device coupled to an inlet side of the second heat exchanger, and a second expansion device coupled to an outlet side of the second heat exchanger, and the second heat exchanger is provided between the first and second expansion devices (520, 540), to allow the refrigerant decompressed by the first expansion device to be cooled by the second heat exchanger and to be decompressed by the second expansion device.