the drum type washing machine according to the third embodiment of the present invention and fig9 is a rear sectional view showing the drum type washing machine according to the third embodiment of the present invention the drum type washing machine according to the third embodiment of the present invention comprises a cabinet 2 for forming an appearance of a washing machine a tub 50 formed integrally with the cabinet 2 and for storing washing water a drum 6 rotatably arranged in the tub 50 for washing and dehydrating laundry and a supporting unit positioned at the rear side of the tub 50 and arranged between the supporting plate 12 to which the driving motor 8 is fixed and the cabinet 2 for supporting the drum 6 with buffering the tub 50 is composed of a first partition wall 52 fixed to the upper front inner wall and both sides inner wall of the cabinet 2 and a second partition wall 54 integrally fixed to the lower front inner wall and both sides inner wall of the cabinet 2 the first partition wall 52 of a flat plate shape is formed at the upper side of the cabinet 2 in a state that the front side and both sides are integrally formed at the inner wall of the cabinet 2 or fixed thereto also the second partition wall 54 of a semi circle shape is formed at the lower side of the cabinet 2 in a state that the front side and both sides are integrally formed at the inner wall of the cabinet 2 or fixed thereto the supporting unit comprises a plurality of upper supporting rods 56 connected to.