The invention relates to an improved structure of a washing machine casing, in particular to a drawer-mounting structure of a barrel washing machine. The drawer-mounting structure comprises at least one drawer and a hinge, wherein the drawer is arranged at the lower part of the barrel washing machine; the hinge is connected with the drawer, one end of the hinge is fixedly arranged on the side wall of the drawer, and the other end is rotatably arranged on a rotating shaft of a barrel washing machine casing. The drawer-mounting structure comprises a damping mechanism which is matched with the hinge and is used for positioning the hinge and preventing the drawer from slipping. Due to the adoption of the technical scheme, the invention provides the drawer-mounting structure by utilizing the inner space of the barrel washing machine so that users can take and fetch objects in a short distance, and the adoption of the damping mechanism prevents the drawer-mounting structure from slipping orpopping and generating working noise in a working process of the barrel washing machine.