Pulverizer for pulverizing fertilizer

The utility model relates to a pulverizer for pulverizing a fertilizer, and belongs to the field of pulverizers. The pulverizer comprises a casing, rotating shafts and a roller, wherein one end of each rotating shaft is connected with the roller positioned in the casing; the other end, away from the roller, of each rotating shaft penetrates through the casing and is connected with an outside power device; the pulverizer further comprises a plurality of ladder-shaped hammer heads; the hammer heads are fixedly connected onto the roller. The pulverizer has the advantages that the structure is reasonable and the production efficiency is high.