Abstract: As the “brain” of the CNC machine tool, CNC system can directly affect the cost and efficiency of production and processing. With the exponential growth of new-generation IT and its profound integration with advanced manufacturing technologies, the intelligence level of the CNC system has become a key factor affecting the realization of intelligent manufacturing. Intelligent CNC system is considered to be the core research area of intelligent manufacturing. This paper is guided by the transformation and upgrading demands for the CNC system posed by intelligent manufacturing. It meticulously examines the relevant international and domestic research on the intelligent technology of the CNC system and the standard requirements of the intelligent CNC system are analyzed. Employing standardization work methods, the standard system framework for the intelligent CNC system is constructed and the standard system is delineated in two primary areas of the fundamental common standards and the key technology standards. This study aims to bridge the strategic top-level design gap for intelligent CNC system, offering a reference for their development and guiding the formulation of related standards.