A laundry treating apparatus is disclosed. The laundry treating apparatus includes a first cabinet having a first receiving space to receive laundry, a second cabinet having a second receiving space to receive laundry, the second cabinet being separated from the first cabinet, a partition wall located at an upper part of the second receiving space to divide an interior of the second cabinet, a supply unit to selectively supply air to the first receiving space and the second receiving space, a discharge unit including an exhaust duct to discharge air in the first receiving space out of the first cabinet and a suction fan provided in the partition wall such that the suction fan is located in the second cabinet to suction air from the second receiving space such that the air from the second receiving space moves to the exhaust duct.