Abstract: To overcome the universal challenge of distributed application integration for Chinese enterprise groups and solve the problem of shared management and cross-domain access control of the service resources under SOA, a whole web service management method is presented. By designing an infrastructure based on Service-Access-Agent and a global authentication and authorization mechanism, the security of the integrated system is ensured with low cost. Meanwhile, by using a registration service based on global unique ID and dynamic invocation mechanism, the agility and loose coupling of SOA are improved. The good adaptability and practical value of the method has been shown by engineering application in a typical group enterprise.