1993年,《中国图书馆图书分类法·期刊分类表》(以下简称《期刊分类表》)第二版出版,时隔19年后,2012年第三版出版。本文对第三版修订必需遵循的指导思想和原则,对大类类名更改、特别处理的大类、重点修订的大类以及局部调整的大类进行了阐述。 In 1993, the second edition of the “Chinese Library Classification of Books and Periodicals Classification” (hereinafter referred to as “Journal Classification”) was published 19 years later and the third edition of 2012 was published. This article elaborates the guiding principles and principles that must be followed in the revision of the third edition, and elaborates on the changes of the categories of categories, the categories of special treatments, the categories of major amendments and the categories of partial adjustments.