At present, China Library Classification (CLC) and China Academy of Sciences Library Classification (CLC) are widely used in Chinese libraries. Most university libraries and public libraries use Chinese Library Classification. Usually, a library has a method. There are few parallel classifications, but they are also used at the same time in the transitional period. In the past few years, hunan normal university library has used two classifications at the same time.

China Library Classification is available in general libraries and can be found in the search system. It's a big book, very thick and heavy, generally in the G category. This is a library business book, which is rarely lent out, and some libraries don't lend it out. The editorial department has a copy for cataloging reference.