The modified Chua's circuit is built by actual electric elements, and the state equations of the modified Chua's circuit are given. The synchronization between the two modified Cuua's circuits is studied through EWB imitating and experiment. The effect of the coupling resistance and the errors of the elements parameters on the synchronous quality are briefly discussed. Lastly the experimental results of the synchronization in the two modified Chua's circuits are presented. The researches show that the synchronization is realized more easily and the synchronous quality is better in the modified Chua's circuit than in the Chua's circuit.