1. Books are divided into social science books and natural science books according to disciplines.
2. Books in different languages are divided into Chinese and foreign languages.
Books are divided into ordinary books and reference books according to their uses.
4. Books are divided into novels, children's books, non-fiction, professional books, reference books, manuals, bibliographies, scripts, reports, diaries, book collections, photography and painting collections.
5. According to the characteristics, books are divided into thread-bound books, hardcover books, paperback books, bagged books, e-books, audio books, books for the blind and ethnic books.