利用博弈论方法和成本分析法,分析信息资源共享如何从“囚徒困境”走向良性合作,发生变化的原因及不同系统图书馆之间实现合作的困难所在;指出图书馆联盟应努力促成政府投入,以此来降低共享成本,建立激励机制,是全面实现共享的关键。 Using game theory and cost analysis, this paper analyzes how information resource sharing moves from “Prisoners’ Dilemma” to “benign cooperation”, and explains the reasons for the change and the difficulties of cooperation between different system libraries. It points out that the library alliance should strive to promote government investment, In order to reduce the sharing cost and establish the incentive mechanism, it is the key to realize the sharing in an all-round way.