The pulverizer including a pulverization chamber, a jet nozzle, a pulverization nozzle, and a collision member is provided. The pulverization nozzle includes an acceleration tube. The acceleration tube includes an acceleration part A and an acceleration part B. A center (a) of the supply aperture is positioned within the acceleration part A. A point of intersection (b) where central axes of the acceleration tube and the supply aperture intersect is positioned within the acceleration part B. An angle θ formed between the central axes of the acceleration tube and the supply aperture satisfies an inequation 30°≦θ