The utility model discloses a pneumatic chute, including the tubulose box, the cavity of box is separated the defeated material chamber arranged about constituting and is ventilated the chamber through ventilative layer, and the one end upper portion in defeated material chamber is provided with the feed inlet, and the other one end lower part in defeated material chamber is provided with the discharge gate, the defeated material intracavity of said box is provided with dials material list unit, and dynamic mechanism driving dials the material that material list unit will fail the material intracavity and pushes aside aside, when carrying material such as copper concentrate like this, dials material through dialling material list unit, can group scatter nextly with failing the accumulational material of material intracavity to prevent that defeated material passageway from taking place to stop up, make like this and actually carrying the material in-process, carry the defeated material passageway in chamber to handle unblocked state, can prevent also then that the upper surface that the material is piled up on ventilative layer from leading to the fact the gas pocket on ventilative layer to stop up, so guarantee to ventilate the gas of intracavity can be smoothly through ventilative layer to the reliable transport work of blowing of material implementation. The utility model discloses simple structure, the continuation and the stability of effectively assurance equipment operation during the use.