Abstract: The traditional crushing and screening process is characterized by large amount of equipment, poor working environment, strong coupling and so on.The bad working environment, dust and noise seriously affect the health of operators, and because of the large number of equipment, the distribution of operating positions is scattered, and the difficulty of personnel and equipment management is great, the operators need to constantly observe on the spot, and the labor intensity is great, it is urgent to improve the automatic control level of crushing and screening process.The problems existing in the traditional crushing process and crushing system are expounded, and the automatic control of crushing process and intelligent crushing expert system are studied, the principle and structure of intelligent expert system for crushing are introduced in detail, and the effect and benefit of intelligent expert system for crushing are also introduced.