A clothes dryer, comprising: a rotatable drum; a drying duct configured to circulate air discharged from the drum by resupplying it thereto; an evaporator and a condenser (140, 149) sequentially provided on a flow path formed by the drying duct; and a compressor and an expansion apparatus configured to form a refrigerant cycle along with the evaporator and the condenser (140, 149), wherein the condenser (140, 149) comprises a first condenser part configured to liquefy a high-temperature and high-pressure refrigerant circulated from the compressor; and a second condenser part configured to condense the refrigerant condensed from the first condenser part again, and wherein the second condenser part is arranged below a condensation water line at a lower portion of the drying duct for cooling the second condenser part using condensation water, characterized in that: a lowest end portion of a refrigerant pipe of the first condenser part is arranged on a condensation water line, a refrigerant pipe of the second condenser part is configured as an independent refrigerant line separated from the refrigerant pipe of the first condenser part and is completely submerged under condensation water, the first condenser part and the second condenser part are connected by a refrigerant circulation line, and the second condenser part comprises at least one heat dissipation fin separated from heat dissipation fins of the first condenser part. a rotatable drum; a drying duct configured to circulate air discharged from the drum by resupplying it thereto; an evaporator and a condenser (140, 149) sequentially provided on a flow path formed by the drying duct; and a compressor and an expansion apparatus configured to form a refrigerant cycle along with the evaporator and the condenser (140, 149), wherein the condenser (140, 149) comprises a first condenser part configured to liquefy a high-temperature and high-pressure refrigerant circulated from the compressor; and a second condenser part configured to condense the refrigerant condensed from the first condenser part again, and wherein the second condenser part is arranged below a condensation water line at a lower portion of the drying duct for cooling the second condenser part using condensation water, characterized in that: a lowest end portion of a refrigerant pipe of the first condenser part is arranged on a condensation water line, a refrigerant pipe of the second condenser part is configured as an independent refrigerant line separated from the refrigerant pipe of the first condenser part and is completely submerged under condensation water, the first condenser part and the second condenser part are connected by a refrigerant circulation line, and the second condenser part comprises at least one heat dissipation fin separated from heat dissipation fins of the first condenser part. a lowest end portion of a refrigerant pipe of the first condenser part is arranged on a condensation water line, a refrigerant pipe of the second condenser part is configured as an independent refrigerant line separated from the refrigerant pipe of the first condenser part and is completely submerged under condensation water, the first condenser part and the second condenser part are connected by a refrigerant circulation line, and the second condenser part comprises at least one heat dissipation fin separated from heat dissipation fins of the first condenser part.