The New Classification Scheme for Chinese Libraries (7th ed., edited by Yung-hsiang Lai) has been an important reference tool for catalogers. However, with the advent of new technologies, publications increase in number and speed, and have overwhelmed the traditional cataloging system. This classification scheme has become obsolete and no longer effectively meets a cataloger's needs. The purpose of this article is to discuss the discrepancies in this classification scheme and its problems. Listed below are topics of interests 1) Unclear numerical designations in the computer 2) Inconsistent subdivisions of categories 3) Over-simplified numerical designations 4) The problems of classifying by year of publication 5) Problems with famous authors 6) Unsuitable classification for new subjects 7) Unsuitable subject descriptions in cataloging 8) Duplicated designation the same subject etc. The basic requirements of a good classification scheme are also described in this article. Several suggestions are given at the end in the hope that the next edition of New Classification Scheme for Chinese Libraries would be more robust and effective for cataloging publications in the 21st century.