In the process of material pulverization, the low-temperature pulverizer system forms a closed-circuit circulation system, which makes full use of energy and saves energy: the temperature of the cold source for pulverization can be reduced to minus 196 degrees, according to the embrittlement temperature of the material. In the pulverization process, the temperature can be adjusted, the optimal pulverization temperature is selected, and the energy consumption is reduced: the pulverization fineness can reach 10-700 mesh, and even the micron μ fineness is used: using liquid nitrogen as a grinding medium to achieve ultra-low temperature pulverization, material Explosion-proof, anti-oxidation and other comprehensive effects.