Abstract: Aiming at the shortage of ODMRP in mobile ad hoc networks where the topology changes frequently, a greedy-based stable routing protocol called GS-ODMRP is proposed, in which the primary path is constructed based on a greedy forwarding mechanism, and the backup path for each link is established according to the link lifetime to enhance the robustness.Simulation results demonstrate that the GS-ODMRP not only improves the packet delivery ratio but reduces the control overhead and end-to-end delay.