A dishwasher includes a drying fan formed on a side of the door to suck wet-vapor existing in a tub, a fan driving motor for rotating the drying fan, a sump formed on a bottom of the tube to reserve washing water, a drain motor for draining the washing water out of the sump, and a control unit for controlling the fan driving motor as well as the drain motor. The control unit controls the operation of the drain motor while the fan driving motor operates.