图书馆的基本职能是在用户和信息之间提供界面。与传统图书馆相比 ,复合图书馆的文献提供可谓既便捷又复杂。本文在参考英美图书馆文献的基础上 ,着重讨论文献采购方针、电子馆藏及其与印刷馆藏的平衡、馆藏拥有与获取的平衡、绩效评估在复合图书馆文献建设中的作用。大多数图书馆都要面对远远超过其文献保障能力的用户需求 ,所以必须具有能帮助馆员分清轻重缓急的文献采购方针 ,这样的方针必须体现图书馆与其母体机构 (资助者 )的共识。采购方针不仅需要确定用户需求的优先次序 (如对教学参考书的需求和对研究文献的需求 ) ,还需要确定语种、专业的优先次序等。采购方针还经常需要辅以更具操作性的预算计算公式。电子资源正在成为重要的馆藏。随着电子资源的普及 ,同一份文献经常拥有不同的形态 :印刷式、CD -ROM、互联网形式、联机形式。在不同形式之间做出选择已经变得越来越复杂。选择馆藏形式的决定需要考虑到以下因素 :使用频率、用户数量、检索设施要求、捆绑购买限制、长期保存的需要、打印需要、成本。馆藏质量要在经常的绩效评估中得到改进。与馆藏质量相关的基本绩效指标包括 :人均文献经费、文献经费占总经费的比例、人均文献增长数量、人均借阅率、文献流通率、借阅文献的比例、馆际互借申 The basic function of a library is to provide an interface between the user and the information. Compared with the traditional library, compound library literature can be described as convenient and complicated. Based on the literature of Anglo-American library, this paper focuses on the literature procurement policy, electronic collection and its balance with the printing collection, possession and acquisition of the balance, the performance evaluation in the compound library document construction. Most libraries face the needs of users far beyond their document assurance capacity and must therefore have a document procurement approach that helps librarians prioritize, and such guidelines must reflect the consensus of libraries with their parent agencies (funders). Procurement guidelines not only need to determine the priorities of user needs (such as the need for teaching reference books and research literature), but also to determine the language, professional priorities and so on. Procurement guidelines often need supplemented by more operational budget formula. Electronic resources are becoming important collections. With the popularity of electronic resources, the same document often has different forms: printing, CD-ROM, Internet form, on-line form. Choosing between different forms has become more and more complicated. The choice of the form of the collection takes into account the following factors: frequency of use, number of users, search facility requirements, bundling restrictions, long-term preservation needs, printing needs, costs. The quality of the collection needs to be improved in regular performance reviews. The basic performance indicators related to the quality of collections include: per capita expenditure on literature, the proportion of the total expenditure on literature, per capita literature growth, per capita borrowing rate, circulation rate of literature, the proportion of borrowed literature, interlibrary loan