CN－MARC格式是《中国机读目录通讯格式》的简称，是我国图书馆制作书目数据的标准。它的出现是为了推进我国书目数据的规范与统一，加速文献信息网络的建设，实现国内各单位之间以及国内与国外之间书目信息的交换与共享。近几年来国内有越来越多的图书馆采用它制作了书目数据 CN-MARC format is short for “China Machine Readable Directory Communication Format” and is the standard for producing bibliographic data in our country’s libraries. Its appearance is to promote the standardization and unification of bibliographic data in our country, speed up the construction of document information network, and realize the exchange and sharing of bibliographic information among domestic units and between domestic and foreign countries. In recent years, more and more domestic libraries use it to produce bibliographic data