Abstract: To keep library information ecology in balance can provide protection for library knowledge service.This paper analyses the impact of information ecology on the knowledge services of university library and the problems from the perspective of information ecology,and puts forward the corresponding countermeasures,such as optimizing information environment,establishing a correct concept of service,strengthening the dominant knowledge service position of library,reinforcing the communication with users,constructing the feedback mechanisms,accelerating the construction and sharing of resources,and promoting the circulation of library information.

Key words: knowledge service; information ecology; university library