Plate machining device capable of preventing powdered scraps from leaking outwards

The utility model relates to a powdered scrap leakage prevention type plate processing device which comprises a holding handle, a drilling machine device and a drill bit, the top end of the holding handle is installed on the outer wall of the bottom end of the drilling machine device, the drill bit is installed in the middle of the front end of the drilling machine device, and an elastic protection mechanism is installed on the outer wall of the front end of the drilling machine device. The elastic protection mechanism comprises a fixed connecting ring arranged on the outer wall of the front end of the drilling machine device, multiple sets of reset springs are annularly welded to the outer wall of the front end of the fixed connecting ring, and the multiple sets of reset springs penetrate through the gap between the connecting outer ring and the connecting inner ring to be welded to the middle of the outer wall of the rear side of each set of dustproof connecting plate. The bottom end of each set of dustproo