Low-deformation machining technology for thin-walled aluminum alloy parts is studies. While aluminum alloys has excellent properties such as high strength and hardness, thin-walled components are prone to deformation during machining. Five key factors contributing to deformation, including residual stress in the blank, machining stress, cutting forces, cutting heat and workpiece clamping are analyzed systematically. A multi-stage stress collaborative control method is proposed, integrating heat treatment at different machining stages, rational selection of processing equipment, clamping methods, cutting tools and parameters, and optimized machining paths to achieve low-deformation manufacturing. Prototyping results validate the applicability of the technical solution, providing theoretical guidance for formulating scientific and optimized machining processes, with significant potential for industrial promotion.