《中国图书馆分类法》第五版于2010年9月问世,为适应十年来学科发展的需要,新版《中图法》在第四版的基础上进行了较大幅度的修订。现归纳第四版《中图法》医药卫生的修订概况,并利用多个性能指标,对第四版和第五版《中图法》R类性能进行定量对比和测评。 The fifth edition of “China Library Classification” came out in September 2010. In order to meet the needs of the development of the discipline in the past decade, the new version of “China Library Classification” has undergone a drastic revision on the basis of the fourth edition. The current revision of the fourth edition of “Chinese Library Classification” medical and health care is summarized and a number of performance indicators are used to quantitatively compare and evaluate the R type performance of the “Chinese Library Classification” of the fourth and fifth editions.