The present disclosure relates to a clothes treatment apparatus comprising: a cabinet having a first input hole at the front side thereof; a first chamber positioned inside the cabinet so as to accommodate clothes through the first input hole; a second chamber positioned at the lower side of the inside of the cabinet so as to form a mounting space separated from the first chamber; an air supply part provided in the second chamber so as to circulate the air of the first chamber; a steam supply part provided in the second chamber so as to generate steam and supply same to the first chamber; and a door assembly coupled to the cabinet so as to open/close the first input hole, wherein the door assembly includes: an accommodation body having a second input hole at the front side thereof; an accommodation space formed in the accommodation body so as to accommodate items including clothes; an air circulation part positioned inside the accommodation body so as to circulate the air of the accommodation space; and an air treatment part positioned inside the accommodation body so as to circulate and dehumidify the air of the accommodation space, and the air circulation part and the air treatment part are operated independently of the air supply part and the steam supply part.