In order to know whether the ICT rotary detecting table can achieve its work requests, performance and structure characteristics of ICT scanning worktable are analyzed. In view of the rotary detecting table turning motion, the method of finite element is used to do dynamic analysis. According to the structure and working features of the rotary detecting table, it is modeled. Then, in terms of the actual operating mode, the model is done the analysis of modal and transient dynamic. The deformation curve figures and dynamic response curve figures are received. By deformation analysis and stress analysis, the dynamic performance of this structure meets design requirements.