The invention discloses a pneumatic chute device which comprises an air chamber, a boiling plate and a material chamber, wherein the boiling plate is arranged above the air chamber; the material chamber is arranged above the boiling plate; a plurality of separating plates are arranged in the material chamber, so as to divide the material chamber into a plurality of small material chambers which extend in the length direction of the material chamber; a discharge opening is formed in the tail end of each small material chamber. The pneumatic chute device provided by the invention has the advantage that the problem of disorderly material flows during the material transportation can be solved, so that the material distribution can be more uniform.