Based on Lyapunov stability theory,an adaptive controller and the parameters update laws were designed to synchronize hyperchaotic Lü system,with unknown parameters and external disturbance,and hyperchaotic Rssler system.Once the synchronization is achieved,the information signals hidden in the transmitter can be recovered exactly at the receiver.The synchronization strategy only uses the boundedness of the unknown parameters and external disturbance,and doesn't have to determine those bounds and Lipschitz constants in advance.Numerical simulation results verify the effectiveness of the method.