Abstract: Knowledge Service is becoming the main theme of the information service industry. A growing number of information services institutions and enterprises have started to redefine the direction of knowledge services, and to design the framework of knowledge services. However, the theoretical research of knowledge services that lags behind the practice is becoming a constraint of knowledge-service. In this paper, to build the new concept of knowledge services science based on the semantic web environment is proposed. The knowledge services science is the new type of large cross-disciplinary that is composed the knowledge service, services science and knowledge science. To construct knowledge services science aimed at to extend the information services the theory to the theories based on knowledge and scientific, and knowledge services as a scientific study. the theoretical framework of scientific knowledge and service, the knowledge service system model based on knowledge unit are given.

Key words: Semantic web, Knowledge service, Service science, Knowledge science