This paper presents the synchronization of chaotic systems subject to parameter uncertainties. Based on the fuzzy models of chaotic systems, a fuzzy con-troller is designed to realize chaotic synchronization. A design criterion of the membership functions of fuzzy controller is proposed to facilitate the stability design towards chaotic synchronization when pa-rameter uncertainties are under consideration. LMI-based stability conditions are derived to guar-antee the system stability using Lyapunov-based ap-proach. Simulation examples are given to illustrate the merits of the proposed fuzzy-model-based control approach.