Abstract: Aiming at the problem of the frequently changes of topology and limited energy of nodes in Ad Hoc networks,a load balancing routing protocol based on ODMRP called LB-ODMRP is proposed,in which the path is constructed based on a greedy forwarding mechanism,and in the consideration of the link lifetime and residual energy of nodes and energy balance of nodes,the model of routing quality is introduced to establish backup path, which enhances the robustness,energy consumption in the network can be fairer and extends the whole network's survive time.Simulation result prove the validity of the protocol.