This paper proposes a cluster-based multi-path routing in MANET (CBMRP). It distributes traffic among diverse multiple paths to avoid congestion, optimize bandwidth used and improve the sharing rate of channel. It uses clustering’s hierarchical structure diverse to decrease routing control overhead and improve the networks scalability. This algorithm is implemented on the OPNET environment, and the results show that the algorithm can balance the load of the network and deal with the change of the network topology effectively, and also improve the reliability, throughput and stability of the network efficiently.