Abstract: Prefabricated construction stagnates in field of coal preparation plant construction, although it is getting well-developed in the field of China's civil building. The application in the field of coal preparation plant construction is only in used in the design of workshop and lack of prospective thought, because of the problem of the design concepts and technological development. Combining the development of new coal preparation technologies in recent years，the use of all-system prefabricated steel structure incoal preparation plant must be reviewed by experts. the paper looks ahead the further of the coal preparation plant design and the further of the all-system prefabricated steel structure used in coal preparation plant.