Abstract: Ten years ago, Library of Qinghua University took the lead in implementing discipline librarian system in China, and introduced advanced management system into China from abroad. With the fast development of internet resource, the discipline service of university library has been facing great opportunities and challenges, and discipline librarian should make full use of new internet tools and authoritative quality library resource to provide new discipline service mode for readers. The paper introduced the necessity of establishing discipline librarian and analyzed its role orientation to adjust the current changes of environment.

Key words: Discipline librarian