The invention relates to the field of machining, in particular to a method for manufacturing an aluminum-based composite moving ring of an ultra-large helicopter. The method comprises the steps of 1,part clamping; 2, scanning and registering; 3, rough machining; 4, flaw detection; 5, artificial aging; 6, semi finish machining; 7, natural aging; 8, finish machining; 9, size detection; 10, bench work; 11, flaw detection; and 12, chromic acid anodic oxidation. With the method, the high-periodicity one-time cutting manufacturing of parts is realized, and the requirements of size accuracy and formand position accuracy are met; and the technology for controlling the deformation of large-diameter hole series of the aluminum-based parts is broken through, and through the technical scheme, a manufacturing process of ultra-large helicopter moving parts is realized, then the product quality and the dimensional accuracy stability are improved, and the flight safety stability of the helicopter moving parts is effectively guaranteed.