In Ad Hoc network,aiming at the huge spending of route discovering and route maintenance of AODV protocol in process of local repair,AODV protocol of improving local repair mechanism is proposed.Common AODV protocol and the AODV protocol of improving local repair mechanism by OPNET are simulated.Simulation results show that the improved AODV protocol is effective in reducing the route spending and point to point average data transfer delay,and it also im-proves the protocol efficiency and the performance of whole network