Abstract: The study on the influence of rotation table rotating accuracy on reconstructed industrial CT image quality was meaningful to select a suitable rotation table and reduce the processing cost of rotation table. In the simulation, the location errors of rotation table were divided into two types: normal distribution and skew distribution. And the projection data of different accuracy case were reconstructed by filtered back-projection algorithm. In addition, the quality of industrial CT image was evaluated by numerical indicators. The simulation results show that the absolute positioning accuracy of rotation table had a strong influence on reconstructed image quality, while the repeated positioning accuracy of rotation table had less effect on the image quality.