1, by subject: social science and natural science books.

2. According to genre: Chinese documents and foreign documents.

3. According to the purpose: ordinary books and reference books.

4. Divided by content: novels, children's books, non-fiction, professional books, reference books, manuals, bibliographies, scripts, reports, diaries, book collections, photography and painting collections, etc.

5. According to the characteristics, it is divided into thread-bound books, hardcover books, paperback books, bagged books, e-books, audio books, books for the blind, and national language books.