Abstract: An impulsive control scheme for a class of unified chaotic systems with parameter uncertainty is proposed using the linear state feedback as the signal to realize the global asymptotic stability. In addition, some new global asymptotic criteria and their extended forms are presented. Compared with the existing results, less conservative conditions are obtained to guarantee the global asymptotic stability. The controller thus designed is simple and easy to implement at high response speed and available to lay down a theoretical foundation for the applications in chaotic secure communication systems and chaotic spread spectrum of carrier communications. The effectiveness of the method proposed is verified theoretically and simulatively.