Adaptive NC machining technology has obvious advantages in the machining of high-powered Aeroengine products and prolonging life overhaul machine products, which is based on flexible manufacturing and adaptive control. Adaptive control factors include stock, error, precision, cutting speed, feed speed, cutting force and so on, in the course of NC machining, which mostly embody four aspects: adaptive control for space geometrical position of workpiece, adaptive control for clamping position of parts, adaptive control for cutting load and adaptive control for machine tool production operation. In the paper, the aero-engine product adaptability processing technology and its key technologies are comprehensively elaborated, and the application of adaptive numerical control processing and control elements are discussed. Finally, it is pointed out that adaptive NC machining technology is an effective method to improve the machining efficiency and accuracy of NC machining, and the adaptive NC machining technology of intelligent control will become an important development direction of intelligent manufacturing.