Researching the deformation prediction of domestic 7050 aluminum alloy aviation thin-walled parts during turning processing and establishing an accurate finite element model for predicting turning deformation is of great significance for ensuring the machining precision and dimensional stability of aviation thin-walled parts, as well as improving the structural strength and reliability of aircraft. This thesis employs simulation and experimental demonstration methods to study the influence of the coupling effect between the initial residual stress of domestic 7050 aluminum alloy and the turning residual stress on the deformation of thin-walled bearing frames during processing. Firstly, based on the machining process of aviation thin-walled bearing frames, a turning deformation simulation model of the bearing frame was established using the birth and death element method. Further, the initial residual stress field of the bearing frame blank and the turning surface residual stress were obtained through the blind hole method and turning experiments, respectively. Lastly, based on the turning deformation simulation model, the deformation of the bearing frame under the coupling effect of the initial residual stress field and turning residual stress was predicted and experimentally verified. The results show that the error of the bearing frame deformation simulation prediction model is less than 15%. The conclusions of this thesis can provide technical support for the control of bearing frame machining deformation.