[目的/意义] 针对图书馆服务中存在的资源需求与资源获取之间的差距问题，构建一种扁平化结构的资源建设模式，帮助用户消除使用图书馆过程中遇到的资源障碍，提高图书馆资源建设效益。[方法/过程] 借鉴B2C商业模式，探讨图书馆资源建设扁平化设计思路，以重庆大学图书馆资源建设为例，对资源构建模式的制度进行制定、对B2C资源建设模式进行实践运行。[结果/结论] 图书馆采用B2C资源建设模式，显著提高了馆藏质量，资源采购效益、资源采购满意度大幅提高。B2C资源建设模式下的图书馆资源需求与用户获得之间不再有中间环节，资源"选"与"采"分离，发挥资源建设工作中需求方和采购执行方的最大优势，图书馆执行采购的纸质资源和数字资源都是用户的真正需求，资源采购的针对性强，资源建设的结构和内容能够得到最优化保障。

[Purpose/significance] In view of the gap between resource demand and resource acquisition in library service, a flat structure of resource construction model is constructed to help users eliminate the obstacles encountered in the process of using library resources and improve the efficiency of library resource construction.[Method/process] Drawing lessons from B2C business model, this paper probes into the flat design idea of library resource construction. Taking the library resource construction of Chongqing University as an example, it formulates the system of resource construction model and carries out the practical operation of B2C resource construction model.[Result/conclusion] The use of B2C resource construction mode in libraries has significantly improved the collection quality, the efficiency of resource procurement and the satisfaction of resource procurement. There is no intermediate link between library resource demand and user acquisition under B2C resource construction mode. Resource "selection" and "acquisition" are separated. The greatest advantages of both the demander and the purchasing executor are brought into play in resource construction. The paper resources and digital resources purchased by the library are the real needs of users and the resources purchased are purchased. With pertinence, the structure and content of resource construction can be guaranteed optimally.