The paper points out that asymmetric information becomes one of main obstacles to improve quality of library books purchasing, discusses the significance and function of taking incentive measures to eliminate asymmetric information from 2 aspects of overcoming adverse selection and moral hazard, and reducing transaction costs. At last, the paper discusses how to encourage book sup-pliers to share information by taking measures of purchasing incentive, cash incentive, reputation incentive, fair incentive and negative incentive.%指出非对称信息的存在是制约图书馆图书采购工作的主要障碍之一。从克服“逆向选择”和“道德风险”现象、降低交易成本两个方面，论述了实施激励措施对消除非对称信息的意义和作用，并就如何通过采购激励、现金激励、商誉激励、公平激励和负面激励等措施来提高馆配商信息共享积极性进行探讨。
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