首先从社会分工和基本职能的角度定位什么是图书馆;其次,在回顾公共产品理论研究的基础上,运用萨瓦斯的公共产品总结列表和“漂移”理论对从纯私人产品到纯公共产品的各种“图书馆”进行连续处理。在此过程中明确民营图书馆的位置,初步揭示民营图书馆的多样性特征,探讨民营图书馆与图书馆民营化的区别。最后,通过引入“公益产权”理论帮助判断图书馆的公益性,用以区分文化事业和文化产业。 First of all, what is the library from the perspective of social division of labor and basic functions? Second, based on the review of the research on public products theory, using Sawas’s summary list of public products and “drift” theory, from pure private products to pure public products Various “libraries” for continuous processing. In this process, the location of private libraries was clarified, and the diversity characteristics of private libraries were initially revealed. The differences between private libraries and private libraries were discussed. Finally, by introducing the theory of “public welfare property rights”, it helps to judge the public welfare of libraries and to distinguish cultural undertakings and cultural industries.