This paper is concerned with the synchronization of chaotic systems. We discuss the synchronization using parametric adaptive control algorithm to adjust one of the parameters of the response system with the appropriate controlling law and controlling coefficient. To make this method realizable, the Logistic mapping and Henon mapping are taken as two typical numerical examples. Both the theoretical and numerical results seem to suggest that synchronization error will gradually be zero under the assured controlling law and controlling coefficient in which chaos synchronization will be achieved.