Researching the deformation control of domestic 7050 aluminum alloy aviation thin-walled bearing frame parts during turning processing is crucial for ensuring machining precision and performance while maintaining cutting efficiency with minimized radial deformation. This thesis employs a combination of experimental and simulation methods to investigate the optimization of turning residual stress deformation for domestic 7050 aluminum alloy aviation bearing frames. Initially, a three-dimensional turning residual stress simulation model was established and validated through experiments for the accuracy of the domestic 7050 aluminum alloy thin-walled bearing frame turning simulation model. Subsequently, an orthogonal experiment was conducted based on the three-dimensional turning simulation model to establish a mapping model between turning parameters and residual stress. Finally, with the objectives of turning efficiency and residual stress optimization, optimized turning parameters for the domestic 7050 aluminum alloy aviation thin-walled bearing frame were obtained using a genetic algorithm. The results show that the optimized machining surface residual stress was reduced to 15.6MPa, and the maximum radial deformation of the bearing frame was 1.59mm, which is about 19% less than the original turning parameters, achieving the goal of controlling and optimizing the processing deformation of the domestic 7050 aluminum alloy aviation thin-walled bearing frame.