Due to the potential applications of the chaotic system, in recent years, the research of a new type of chaotic system and chaotic circuit is a hot spot. However, there are obvious differences between real characteristics and simulation results of the devices, such as the operational amplifier. In this paper, the simplified method of the circuit improvement is proposed, which achieves the same results between Multisim software simulation and actual circuit implementation. Meanwhile, impulsive synchronization method is applied to complete the synchronization control of the chaotic system. Compared with the original circuit, the proposed method of circuit improvement makes minor changes from the simulation circuit and is easy to be implemented, which can be applied for other chaotic systems.