Abstract: For servo-system of permanent magnet linear synchronous motor (PMLSM), the paper gave a new fuzzy controller with self-organizing and self-regulating factor. This controller can get fuzzy rules automatically with few expert experiments and improve its static and dynamic characteristics. Two-mode fuzzy controller without steady-state error were designed, which improved dynamic speed of response and static precision of servo-system. The experiment results showed that the servo-system has some advantages such as strong ability of self-organizing and self-study, quick tract, precise location and strong robustness.