A clothing treatment apparatus is provided. The clothing treatment apparatus according to an embodiment includes a body including a storage chamber that stores clothing, a spray member configured to spray steam toward the clothing, a steam generator configured to supply steam to the spray member, a cabinet provided under the storage chamber, and a water supply container configured to store water inside, the water supply container being detachably combined with the cabinet, wherein the cabinet includes a cabinet plate formed with a supply hole that connects the water supply container to the steam generator and a discharge hole that drains residual water discharged when the water supply container is detached.