A new generation of CNC machine tools (including machining centers) can only further increase their productivity by significantly reducing the cutting time by speeding up. Ultra-high-speed machining, especially ultra-high-speed milling, is closely related to the development and application of a new generation of high-speed CNC machine tools, especially high-speed machining centers. Since the 1990s, countries in Europe, the United States, and Japan have been competing to develop and apply a new generation of high-speed CNC machine tools, speeding up the pace of development of high-speed machine tools. High-speed spindle unit (electric spindle, speed 15000-100000r/min), high-speed and high acceleration/deceleration feed moving parts (fast-moving speed 60~120m/min, cutting feed rate up to 60m/min), high-performance CNC New breakthroughs have been made with servo systems and CNC tool systems, reaching new levels of technology. With ultra-high-speed cutting mechanism, super-hard wear-resistant long-life tool materials and abrasive tools, high-power high-speed electric spindle, high acceleration/deceleration linear motor drive feed parts and high-performance control system (including monitoring system) and guards And a series of technical solutions in the field of technology, we should not miss the opportunity to develop and apply a new generation of high-speed CNC machine tools.