A laundry treatment apparatus comprising: a body configured to be separably coupled to a support structure provided at the outside of the laundry treatment apparatus, the body serving to support clothes; a suction portion provided in the body to inhale air from outside the body to the inside of the body; an exhaust portion perforated at a lower surface of the body to provide a perforated part to discharge the air passed through a heater to the outside of the body, the suction portion being provided at each of opposite ends of the perforated part; an air circulation flow path provided inside the body to connect the suction portion and the exhaust portion to each other; a fan provided in the air circulation flow path for introducing the air through the suction portion and discharging the air through the exhaust portion; and the heater located between the fan and the exhaust portion for heating the air introduced through the suction portion, and a steam supply device provided inside the body for supplying steam to the outside of the body, wherein the steam supply device includes: a steam generator configured to generate the steam; a water supplier configured to supply water to the steam generator; and a steam outlet configured to discharge the steam, generated by the steam generator, to the outside of the body; a steam discharge flow path configured to connect the steam generator and the steam outlet to each other, wherein the steam discharge flow path is connected to the air circulation flow path to supply the steam by using the air moving inside the air circulation flow path. a body configured to be separably coupled to a support structure provided at the outside of the laundry treatment apparatus, the body serving to support clothes; a suction portion provided in the body to inhale air from outside the body to the inside of the body; an exhaust portion perforated at a lower surface of the body to provide a perforated part to discharge the air passed through a heater to the outside of the body, the suction portion being provided at each of opposite ends of the perforated part; an air circulation flow path provided inside the body to connect the suction portion and the exhaust portion to each other; a fan provided in the air circulation flow path for introducing the air through the suction portion and discharging the air through the exhaust portion; and the heater located between the fan and the exhaust portion for heating the air introduced through the suction portion, and a steam supply device provided inside the body for supplying steam to the outside of the body, wherein the steam supply device includes: a steam generator configured to generate the steam; a water supplier configured to supply water to the steam generator; and a steam outlet configured to discharge the steam, generated by the steam generator, to the outside of the body; a steam discharge flow path configured to connect the steam generator and the steam outlet to each other, wherein the steam discharge flow path is connected to the air circulation flow path to supply the steam by using the air moving inside the air circulation flow path. a steam generator configured to generate the steam; a water supplier configured to supply water to the steam generator; and a steam outlet configured to discharge the steam, generated by the steam generator, to the outside of the body; a steam discharge flow path configured to connect the steam generator and the steam outlet to each other, wherein the steam discharge flow path is connected to the air circulation flow path to supply the steam by using the air moving inside the air circulation flow path.