Dual-purpose eraser machine

The invention discloses a dual-purpose eraser machine. The dual-purpose eraser machine comprises a shell, a clearing plate is arranged on one side of the top of the shell, an ash clearing box and a cleaning box are arranged on one side inside the shell and separated through a partitioning plate, a dust collector is fixedly arranged at the bottom end of a manual clearing box, and an ash discharging port of the dust collector is communicated with a wastewater collecting box arranged on one side of the bottom end of the cleaning box through a pipeline. By arranging the dust collector, chalk ash generated by manual ash clearing is absorbed and led into water to be filtered, so that pollution to air is prevented for the chalk ash. An eraser containing box is arranged, and an eraser is cleaned through a water pipe and a water pump; by arranging a lead screw and a brushing piece, the lead screw is driven by a motor to drive the brushing piece to move back and forth, so that the eraser is brushed and further cleaned;