A fully automatic washing and drying machine includes an outer tub elastically supported in a housing; a washing/dewatering tub rotatably arranged in the outer tub; a hot air supplying unit including a heater and a fan, and air heated by the heater is supplied into the washing/dewatering tub by the fan from an upper part of the outer tub; and a discharging port arranged at a lower part of the outer tub and configured to discharge the air which has been in contact with washings in the washing/dewatering tub. The discharging port is connected to an exhaust duct extending upward, and an exhaust port is formed in the exhaust duct. The discharging port is located at a position higher than a water overflowing level at which water overflows from the outer tub.
