Computer mainboard ash removal device

The utility model relates to the field of dust removal, in particular to a computer mainboard dust removal device which comprises a base, a sliding support, a sliding tray, a sliding limiting piece, a transverse sliding rail, a longitudinal sliding rail, a sliding piece, an air blower, a spray head, a collecting hopper and a dust collecting bag. The top of the base is connected with the sliding bracket; the top of the sliding support is slidably connected with the sliding tray. The side surface of the sliding tray contacts with the sliding limiting piece; the top of the base is connected with the sliding limiting piece. The top of the base is connected with the transverse slide rail; the side surfaces of the transverse slide rails are slidably connected with the longitudinal slide rails; by means of the device, the stability of dust removal machining can be effectively improved, it can be guaranteed that the spray head can freely move in the plane through the structure of the sliding rails perpendicular to ea