Abstract: The intelligent control of a rotor flux oriented vector control system was studied. According to the characteristics of vector control systems, the control system was designed by making full use of the computer features of logical judgment and numerical calculation. It not only realizes the digitizing of the analog regulator but also overcomes the shortcoming of the control parameters being constant. The article emphatically introduced the adjustment of the digital controller in rules on the basis of the variables' variation tendency of the control system. Since different control strategies were adopt for different regulating laws, the control system has better static and dynamic performance and robustness. Simulation and experimental results show the correctness of the proposed method.