Abstract: Two kinds of security solutions for self-behavior problems in cognitive radio networks are proposed.The solutions are based on the architecture of cluster-based cognitive radio networks.To solve the self-behavior problems that hide available channel information in the routing set-up process,first of all,trusted cluster-heads find self-nodes,and then the cluster-heads send available channel information from forward nodes to the destination node.To prevent the self-behaviors of refusing to forward packets caused by self-nodes, the nodes use a monitor mechanism to find self-nodes, in this way to avoid self-nodes as forward nodes. A routing protocol is designed to test the feasibility and effectiveness of the solutions. It is proved by theoretical analysis and simulation that self-behavior problems can serious decline network communication performance and the two solutions can effectively solve the problems of self-behavior and separately significantly improve the average capacity and the network throughput of cooperation nodes.