In MANET consisting of only mobile nodes, all nodes serve as routes. However, the dynamic topology due to frequent movement of nodes degrades routing performance and is also cause of many security vulnerabilities. Therefore, security m ust be applied to routing techniques that can influence the performance of MANET. In this paper, we propose a technique for efficiently responding to various routing attacks and safe data transmission through application of zone-key based secu rity routing techniques. A zone-based network structure was used, and a management node that manages member nodes i n each zone was used in the proposed technique. In addition, the damage from the attacking node was minimized by issui ng a key to each node and applying this to a routing technique. The zone management node issues a key for encryption r outing information and manages the issuance information. A member node that wants to transmit data encrypts routing in formation using a key issued from the zone management node, and then performs path discovery using this. The improve d performance of the proposed technique was confirmed through a comparative experiment with the CBSR and ARNA tec hnique, excellent performance was confirmed through experiments.