A laundry processing apparatus according to the present invention comprises: a cabinet; a tub, arranged in the interior of the cabinet, for storing laundry water; longitudinal dampers connecting the cabinet and tub and supported on supporting ends on the hub, and supporting the tub as same hangs from the cabinet; pivot supporting parts arranged on the top parts of the cabinet and from which the longitudinal dampers are hung and supported; upper guide pins fixed to the pivot supporting parts and extending vertically; upper transverse dampers, connecting the upper guide pins and tub and vertically movable along the upper guide pins, for reducing the horizontal vibration for the tub. The laundry processing apparatus according to the present invention has the effect of reducing the horizontal vibration of the tub by means of the transverse dampers connecting the pivot supporting parts and tub.