WSN's reliability plays an extraordinary role in certain applications. Among the reliability related solutions, the reliability of the network largely dependent on the routing reliability which mainly dependents on both aspects of the cluster-heads' reliability and gateways' reliability. This paper proposes a novel redundancy-based directional reliable multi-hop clustering routing algorithm (DRMC) for wireless sensor network. DRMC integrates the diffused clustering with the mechanism of multiple backup of the cluster-head and gateway node, this mechanism not only keeps the proper lifetime, the stability and expansibility of the network, but also improves the speed and reliability of the routing process. The efficiency of the algorithm is verified through the simulation results.