In order to solve the problems in the manufacturing process of enterprises, such as slow technology update speed, difficult upgrading and reengineering, and poor level of multi-technology integration, taking a miniature smart factory of seal processing as the object, the physical and virtual interactive platform was designed by using digital twin technology.By realizing the whole production process of intelligent storage, intelligent processing, intelligent detection and intelligent assembly of seals, the mapping of all elements of everything and everyone in physical and virtual space was achieved.The platform can be used to realize quantitative, visual management, and the intelligent analysis of production configuration, processing, circulation and other links. This method provides reference for the quantitative analysis of traditional lean methods.