combining the new development of mathematical model and control theory of PMSM, it introduces the advanced “composite control strategy” to improve the performance of controller, which combines fuzzy control and traditional Pi control and puts forward the fuzzy-Pi dual mode control strategy. According to the given skew range in advance it makes it possible to realize automatic operation between fuzzy control and PI control, then, the design of the permanent magnet synchronous motor fuzzy PI dual mode control system comes true. The system is modeled and simulated in Matiab/Simuiink platform. Then the results show that the controller has quick dynamic response and eliminates the steady-state error basically. It has the very good robustness, dynamic characteristic and stability.