Peer-to-peer technologies have attracted increasing research attention with fruitful protocols and applications proposed for wired networks.As to mobile environments,mere are currently no mature deployments.A novel resource managing and discovering protocol,Cheer,is proposed to realize scalable and effective peer-to-peer lookup in wireless self-organized networks. Cheer resolves the topologies mismatch problem between peer-to-peer overlay networks and actual nodes distribution,allowing for frequent nodes membership changes.With specially designed resource storage table.Cheer also supports multikey and fuzzy lookup.Its hybrid architecture and improved routing scheme based on small-world theory may realize effective lookup routing. Theoretical analysis and simulation results both prove that Cheer makes using peer-to-peer applications in large-scale self-organized mobile networks feasible and promising. Peer-to-peer technologies have increased increased research efforts with fruitful protocols and applications proposed for wired networks. As to mobile environments, mere currently currently no mature deployments. A novel resource managing and discovering protocol, Cheer, is proposed to realize scalable and effective peer-to-peer lookup in wireless self-organized networks. Cheer resolves the topologies mismatch problem between peer-to-peer overlay networks and actual nodes distribution, allowing for frequent nodes membership changes. Theoretical analysis and simulation results both prove that Cheer makes using peer-to-peer applications in large-scale self-organized mobile networks feasible and promising.