The utility model discloses a pnematic coal dust cleaner has solved the inconvenient problem poor with dust suppression effect of removal that current dust remover exists. It is provided with intake stack clearing hole (3) to include on the stack shell of barrel (2), be provided with air sump pump (5) in the barrel, it passes through passageway (8) to be provided with the coal dust between air sump pump (5) and barrel medial surface, right -hand member portion in the barrel is provided with dust settling compartment (11), be provided with aqueous vapor mixing fog spinning disk atomiser (20) on the left end lateral surface of barrel, the income wind gap of aqueous vapor mixing fog spinning disk atomiser (20) and the one end of backwind tube (19) intercommunication, the other end and return air inlet (7) on air sump pump (5) the intercommunication of backwind tube (19), the water inlet of aqueous vapor mixing fog spinning disk atomiser (20) is through the third port intercommunication of the pipeline of dividing (18) with tee bend (15), be provided with dust exhaust mouth (13) on the right -hand member barrel of barrel. The utility model discloses the dust fall purifies in can inhaleing the cleaner to the coal dust in the very first time.