Intelligent Manufactusing Technology (IMT) and Intelligent Manufacturing System (IMS) is one of high technology area on which highly industrialized countries pay more attention to develop and explore. In this paper，The basic concepts and principles of IMT and IMS are discussed. The core technology about manufacturing processing modeling and signal analysis,the strategy and methods of control are also discribed from the viewpoints of the intelligent control. Finally an existing example for describing the construction of IMS shows the research trands of this field.