As the development of the modern manufacturing technology, the demand on the species of special tool and knifeedge is increasing. However, the complicated tools are very difficult to process by normal tool grinder and the traditional production process. View of this situation, a kind of fiveaxis CNC tool grinder was developed. Whats more, the performance of grinder was affected by the stress and the deformation of rotary feed system. The stress and the deformation of rotary feed system were analyzed by Solidworks Simulation. The analysis results show that the maximum stresses of B and C axis rotary worktable are less than the yield stress of their material, which prove that the structure of B and C axis worktable is safe and reliable.