Support dust blowing box

A support dust blowing box comprises a box body and an air gun. The support dust blowing box is characterized in that a box opening is formed in the upper portion of the left side of the box body, a support extends into the box body by the aid of the box opening to remove dust, an air guide plate is obliquely arranged on the upper portion of the right side of the box body, a basin-shaped sealing ring is arranged in the middle of the box body, an exhaust fan is arranged in the middle of the basin-shaped sealing ring, an exhaust pipe of the exhaust fan extends out downwards, the basin-shaped sealing ring, the basin-shaped sealing ring and the air guide plate form a dust blowing cavity in the upper portion of the box body, the bottom of the box body is filled with water, water level is higher than a pipe orifice of the exhaust pipe, and an exhaust port is formed in the lower portion of one side of the box body. The adsorption force of the surface of the support is greatly weakened by negative ion air, the dust and chippings are brought into the water and settled by the water by the aid of suction force of the exhaust fan, dust removing effects are improved, and pollution is avoided.