Plant pulverizer

The utility model discloses a plant pulverizer which comprises a machine base and a driving mechanism, the machine base is provided with a feeding port and a discharging port, a pulverizing cavity and a rotating wheel are arranged in the machine base, a circle of fixed cutter teeth are arranged in the pulverizing cavity, and the rotating wheel is installed on a rotating shaft of the driving mechanism. The rotating wheel comprises a wheel body, a limiting ring, a fastener and a plurality of rotating cutters, a plurality of mounting guide grooves are formed in the wheel body at intervals, one end of each rotating cutter is correspondingly mounted in the corresponding mounting guide groove and then is limited by the limiting ring, the fastener penetrates through the limiting ring, the rotating cutters and the wheel body and then fixes the rotating cutters, and rapid mounting of the rotating cutters is achieved. When the rotating cutter needs to be replaced, the fastener is reversely rotated, the limiting block i