There are some disadvantages of the region subdivision table in the Chinese Library Classification(4th edition),such as the unreasonable category-setting,rough categories and inconvenient classification.

Comparing with the rapid development of the computer industry,the category setting and annotation of TP3(computing and computer technology) in the Chinese Library Classification(4th edition) is old and inappropriate.

Chinese Library Classification(4th edition) is not suitable for the need of classifying professional literature of some professional categories in libraries.

The Chinese Library Classification (4th Edition)is the main tool for Chinese librarians to classify the military documents, but there is no class on the information warfare, which brings difficulty to information warfare documents classification.

Problems in traditional Chinese medical class of the "China Library Classification,4th ed." and suggestions for the solution;

Probe into the Set-up of Opera Category in <China Library Classification>;

The class systems of medical schemes of China Library Classification (CLC) (4th ed.

Paper classification should use Subject Classification And Code Not Chinese Library Classification;

The Measurement of Index of Chinese Library Classification 2,3,4 edition;

An Appraisal of Ethnology Categories in Chinese Library Classification (The 4th edition);

Construction and Use of Automatic Mapping System Between CLC and DDC;

Principle of the Automatic Mapping System of Library Classifications——Take CLC and DDC as the Example;