The lump ore falls into the upper crushing chamber from the feed hopper and onto the upper throwing disc. With the help of the centrifugal force of the throwing disc, the material is thrown to the inner wall of the cylinder, and violently collides with the counterattack plate installed on the inner wall. At the same time, the materials collide with each other. It is broken or a large number of hairline cracks are generated, and then the material enters the conical rotor cavity and falls in a spiral shape in the conical space. After punching and extrusion, the cracked ore is further broken. Due to the inclination between the conical rotor and the lining plate, the smaller materials are forced to migrate downward, and the grading and crushing can be automatically realized from large to small. The material is hit by the hammer in the conical rotor cavity, the high-speed running block material collides with the counterattack plate again, and the material flow collides with each other, so that the material is crushed by the blowing, impacting, shearing and extrusion surfaces, thereby improving the crushing efficiency.