图书馆目录是揭示藏书,宣传图书,辅导阅读的检索工具。通过图书馆目录可以使读者了解图书馆藏书内容,确认图书质量,以决定自己的选择。图书馆目录的种类及形式多种多样,以适应广大读者的不同需要。在图书馆长期实践过程中,书名目录、著者目录、分类目录这三套基本目录被普遍设置和使用。但由于读者需求的多样性,仅有这三套目录还不能解决所有的检索问题,尤其在一些专业图书馆,读者大多为科研人员,因其科研工作的特点所决定,他们 Library catalog is to reveal the collection of books, publicity books, counseling reading retrieval tools. Through the library catalog allows readers to understand the contents of the library collection to confirm the quality of books to determine their own choices. Library catalogs of various types and forms to adapt to the different needs of readers. In the course of long-term practice of the library, the three basic directories of title, author directory and classified directory are generally set and used. However, due to the diversity of readers’ needs, only these three sets of catalogs can not solve all the retrieval problems. In particular, in some professional libraries, most readers are researchers, who are determined by the characteristics of their research work