This machine utilizes the high--speed relative motion between the moving and regular tooth set, which makes the material crushed through concussion, rub and crush between the materials. The structure of machine is simple, firm and operating steadily and the result of crushing is well, no dust nuisance. The crushed material is discharged directly from mainframe. The different sizes of the granule are gained through replacing different pore sizes of sieve. In addition, this machine is made of the whole stainless steel, surface of the inside of the machine is smooth, which changes the phenomenon of inboard wall coarse and accumulating of powder in the past. It meets national standard even more to make medicines, food, chemical industry, etc.