A laundry processing apparatus includes a wall defining a condensed water collecting space configured to collect condensed water. The wall has an opening hole that is open to communicate with an inside of a cabinet of the laundry processing apparatus and that is configured to open and close by an opening and closing unit. Therefore, when the laundry processing apparatus is not operated, the condensed water remaining in the condensed water collecting space is quickly removed by air inside the cabinet, and during drying operation or drainage operation, the opening hole is closed by the opening and closing unit, pressure leakage is prevented for a space where air flows or a space where the condensed water is pumped.