In order to provide quicker, and more comprehensive network service for users, and to bring more convenience for the development of the SPlCP(Service Provider/Content Provider),we propose an open service system whose architecture and the standardization of the open API(Application Programming Interface) are discussed more in this paper. To design such a system, Firstly, the common services model, which could realize the auto choice of the most appreciate services among the services provided by diff erent SP/CP, needs to be built through extracting the service characteristic from diff erent network services. Secondly, it must be ensured that, through the standardized open API, all the common services in diff erent fields could access the service integration and publishing platform. The advantage is that the users can not only realize the mashup of services they need, but also are able to release the services they have developed on such a platform.