A fuzzy adaptive synchronization control method of Permanent Magnet Synchronous Motor chaotic system with unknown parameters is proposed. Firstly, the model of PMSM in the rotor?field oriented frame is transformed into the dimensionless form via the affine transformation and time scale transformation. The chaotic dynamical behaviors of PMSM are illustrated by analyzing its phase portrait and Lyapunov exponents in details. T?S fuzzy model is then employed to represent the chaotic drive and response systems, where the parameters of the drive system are assumed unknown, and the response system is designed by adaptive strategy to estimate the unknown parameters, and its stability is guaranteed by Lyapunov stability theory. In addition, the fuzzy controller in response system is designed to realize the synchronization between the PMSM chaotic system and the response system. The synchronous error system is proved to be asymptotically stable. Finally, numerical results illustrate the validity of the proposed adaptive synchronization approach.