Drum washing machine

A drum washing machine which reduces the number of balance weights installed on the rear surface of a tub (11), and prevents the tub (11) from being cracked due to eccentric rotation. The drum washing machine includes a bearing housing (50) installed on the tub (11) for supporting a rotary shaft (30); and a bearing housing bracket (60) fixing the bearing housing (50) to the tub (11), and serving as a balance weight for reducing vibration generated due to the eccentric rotation of a rotary drum (12). The drum washing machine further includes a balance weight (70) detachably attached to the tub (11) separately from the bearing housing bracket (60). The bearing housing bracket (60) may be made of cast iron. The weight of the bearing housing bracket (60) may be at least three times the weight (70) of the balance weight. The thickness of the bearing housing bracket is gradually reduced from an opening to an edge portion.