This paper researched on the parameter identification and synchronization with different stucture of an autonomous chaotic systems. Based on stability theory,a parameter identifier and a synchronization controller were designed,and the designed controller was proved to be able to globally stabilize asymptotically the controllyed system to its zero point.Numerical simulations results show that global synchronization between the uncertain autonomous chaotic system and the Rssler chaotic system can be achieved under the coaction of the identifier and the controller,and all the parameters of the autonomous chaotic system can be identified.