Abstract: A method of realization of chaotic synchronization based on non-duplicated system intensisy cation is studied. Selecting suitable control coefficient of the non-duplicated system can synchronize the chaotic systems. Where the duplicated system can't be synchronized, the non-duplicated (responding) system can also synchronize or accelerate the synchronization of the chaotic system. Simulation results of synchronization of the Chua chaotic circuit and the chaotic Lorenz system demonstrate the method is effective.