Abstract: The sizing crusher was taken as the research object. This paper briefly introduces the structure characteristics of the sizing crusher and its composition, and the present situation of intelligent technology of the sizing crusher is systematically studied and analyzed. According to the current demand of intelligent development of the coal preparation plant, four key technologies of intelligent sizing crusher which need to be further studied in the future are proposed and corresponding technological breakthrough ideas are given．These include intelligent perception technology, intelligent analysis and decision technology, intelligent execution technology and intelligent health management technology. It is expected to provide reference for the design and development of intelligent sizing crusher.