Abstract: In the human history,the appearance of human community gives the birth of service. With the changing of the times, the expression form of service is evolving, but the purpose of service has not changed. The arrival of the information age brings the huge impact on the library social position. How to face and adapt the change of environment and maintain the sustainable development of library needs to be solved by librarians with concerted efforts. This paper considers that meeting the needs of readers, improving the service pattern at the fight moment and promoting the social development are important prerequisites for the sustainable development of library.

Key words: library; reader service; service model