Abstract: A new load-balanced multi-rate aware routing algorithm(LBMR) is proposed to fully utilize the inherent multi-rate property of IEEE 802.11.A high rate relay table is constructed in each node through broadcasting neighbor node information periodically.LBMR make multi-rate decisions based not only on higher data rate,but also on link layer queue size of neighbor nodes.In this way,it can avoid aggravating local congestion and distribute traffic among a set of diverse nodes.Simulation results demonstrate that LBMR can significantly improve the network throughout.