The paper classification number is China Library Classification Number, which is the number for classifying and numbering documents according to China Library Classification Number. China Library Classification is the most widely used book classification in domestic libraries, which facilitates the classification and retrieval of documents and improves the efficiency of scientific research.

The classification number of China Library Classification is the category of the papers written by the author. I need to fill in this item when I write my thesis. That is to say, the classification number of China Library Classification needs to be inquired and filled in by the author himself, as well as the corresponding classification of the author in the details of China Library Classification. For example, the content of the dissertation belongs to the computer network, and the classification number is TP393, so it can be filled in at the specified location.

Sometimes the author's articles may involve interdisciplinary subjects, so special attention should be paid when inquiring and filling in the classification number of China Library. You can fill in multiple classification numbers, and the classification numbers of different categories are separated by semicolons. Filling in the classification number of Chinese Library Classification is convenient for us to retrieve the required literature and our published articles.