A clothes treatment apparatus includes a cabinet including a treatment chamber, a steam unit that is located in the cabinet and that is configured to generate steam, and a steam spray device that is located in the cabinet and that is configured to spray steam into the treatment chamber. The steam spray device includes a main body part that defines a main body space. The steam spray device includes an introduction part that is configured to allow steam that is generated by the steam unit to enter the main body space. The steam spray device includes a nozzle part that is connected to the main body part, that communicates with the main body space, and that is configured to discharge steam in the main body space into the treatment chamber. The steam spray device includes a condensed water discharge part and a partition wall.