Aiming at low efficiency and large deformation that are common in the processing of specialshaped thinwalled parts, a typical specialshaped thinwalled part was taken as an example to optimize the process flow and the clamping method, a new design fixture was introduced into the clamping method. The comparison test was used to compare the processes before and after optimization, then the part processing time and dimensional accuracy were analyzed. The results show that the processing efficiency is higher after optimization, and the accuracy of the parts is significantly improved. The process optimization research has achieved good results, and has a guiding effect on the processing of specialshaped thinwalled parts.