The utility model provides a dust removing device for gas, includes the tower body, and the top that the bottom of tower body was equipped with intake pipe (5), tower body is equipped with outlet duct(6), and its characterized in that has three -layer column plate (1) in the tower body, be equipped with on every layer column plate (1) two riser (2), and two riser (2) top is equipped with one tympanic bulla pipe (3), is equipped with on every tympanic bulla pipe (3) a plurality of bubble hole (4). In being, column plate (1) establishes the column plate of gaseous counterattack formula internals. The utility model discloses the water consumption is few, the dust removal is clean.