The 9FX series straw pulverizer provides a pulley as a counterweight pulley, a pulverizer rotor with a cutter, and a casing spiral fan casing. The circumferential ring screen increases the sifting area, the discharge area is large, and the powder is quickly discharged. The feeding hopper is a fan type feeding hopper, and the cantilever type tangential feeding high-efficiency energy-saving straw special pulverizer has applied for national invention patent, the power of the machine is reduced by 50%, and the power productivity is increased by 100%. The indicators are more than double the national standard. It can crush various straws and branches of crops, and has adjustable thickness and wide application.