Abstract: In view of the wireless sensor network is serious in moving process and the harsh environment of the packet loss and link failures,based on the analysis of AODVjr algorithm and AOMDV routing algorithm,this paper proposed a new routing protocol S-AOMDVjr.S-AOMDVjr can establish multiple paths in the route discovery process,and maintain the link by improved KEEP ALIVE information,which contains the communication quality of the current link.Simulation based on NS2 software indicates that both datagram successful transmission rate and delay time is improved, being compared with the AODVjr and AOMDV routing protocol.