A laundry processing apparatus includes: an outer tub for accommodating washing water therein; an inner tub disposed inside the outer tub and containing laundry therein; a pulsator provided in a lower portion of the inner tub; a blade provided below the pulsator; a driving motor disposed outside the outer tub for rotating a washing shaft; a pulsator connecting shaft penetrating a lower side surface of the outer tub for rotating the pulsator; a blade connecting shaft which also penetrates a lower side surface of the outer tub for rotating the blade; and a gear module disposed outside the outer tub for transmitting a rotational force of the washing shaft to the pulsator connecting shaft and the blade connecting shaft respectively.