This machine has wide application and is widely used in the pharmaceutical industry, chemical industry, pesticide industry, food industry, grain industry, etc. This machine uses the relative movement between the movable and stationary toothed disc, the raw material to be crushed performs complex operations , such as impact of teeth, friction, impact between raw materials, finally, the raw materials to be crushed. Its features are simple and strong in structure, stable in operation, high crushing efficiency. The crushed raw materials can be discharged through the grinding chamber. Moreover, different sizes of raw materials to be crushed can be obtained by changing the sieve with different mesh; its inner wall is processed finely. Thus, it is smooth and even. It overcomes the disadvantages that existed in the old model, such as roughness, accumulated powder. It makes the products of drugs, food and chemicals, etc. comply with government standard and meet GMP requirements.