Abstract: Librarian＇s psychological contract violation refers to librarian＇emotional experience when librarian believes that library organization has failed to comply fully with the cognitive basis of psychological contract.It has a negative impact on library and librarian.According to its formation mechanism,this paper considers that establishing effective communication system,setting people-oriented management philosophy,creating integrity and fairness organizational culture and building learning library can prevent the production of librarian＇s psychological contract violation and reduce the adverse effects.

Key words: librarian; psychological contract violation; human resource management