1. Books are divided into social science books and natural science books according to disciplines.
2. According to the language, it is divided into Chinese documents and foreign documents.
3. According to the purpose, it is divided into ordinary books and reference books.
4. According to the content: novels; Children's books; Non-fiction; Professional books; Reference books; Manual; Bibliography; Script; Report; Diary; Book collection; A collection of photos and paintings.
5. According to characteristics: thread-bound books; Hardcover book; Paperback book; Bagged books; Electronic book; Audio book; Books for the blind; National language books. The history of books is closely related to the development of writing, language, literature, art, technology and science. It can be traced back to the inscriptions on stones, wood, pottery, bronzes, palm leaves, bones, birch bark and so on. The use of papyrus greatly promoted the development of books. Around the 30th century BC, Egyptian papyrus scrolls appeared, which was the earliest embryonic form of Egyptian books. The papyrus scroll is closer to the concept of modern books than the clay tablets of Sumer, Babylon, Assyria and Hittite.