The underlying theme is the overcoming of interoperability limitations arising from the need for service and client developers and to agree in advance on the syntax and semantics of interactions, thereby making it possible for clients to successfully utilize web services without prior arrangements between people that are realized in rigid software protocols, and immutable ontologies or meta-data. Currently Web Service systems, which publish WSDL-described Web Services in UDDIs, cannot support SWS and UDDI has become the bottleneck of the whole system and would cause single node failure problems. Finally we propose our own CAN-based P2P system to replace traditional UDDI, by distributing the functions of the UDDI among all the peers in the P2P network. At the same time, we design an ontology-based mechanism, guaranteeing every service would be registered on a specific peer in the CAN-based P2P network, according to the service’s ontology. By replacing the UDDI, our system improves the scalability and stability of the SWS system, and realizes an efficient ontology-based publishing and discovery of Semantic Web Services.