In the cloud computing, there are massive functions and resources are encapsulated into Web services. The traditional web service registry systems normally using the central architecture can’t meet the requirements of cloud computing. A web service registry system based on structured P2P system with secure access and control is implemented. Multiple Universal Description, Discovery and Integration (UDDI) nodes are organized by the P2P based schedule and communication mechanism. The registration and discovery of Web services is redesigned to the new system that provides services like one single UDDI server. The experiment results show that the capacity can be extended dynamically and support large scalable access.