Book classification, also called book classification thesaurus, is classified according to the contents, forms, genres and readers' uses. Under the guidance of certain philosophical thoughts, the books of various disciplines are divided into several categories according to their subject contents by using the principle of knowledge classification and logical methods. Each category is divided into many subclasses, and each subclass is divided into molecular subclasses.

China's book classification is basically divided into Marxism-Leninism, Mao Zedong Thought, philosophy, social science, politics, law, military, economy, culture, science, education, sports, language, literature, art, history, geography, natural science, mathematical chemistry, astronomy, earth science, biological science, medicine, health, agricultural science and industrial technology.

1, philosophy (abbreviation: Phil) (English: philosophy, Greek: ι ο ο φ? α): It is a study of basic and universal issues. Branches of philosophy include China's philosophy, western philosophy, ethics, religion, aesthetics, logic, psychology, philosophy of science and technology, etc. According to its etymology, it means that the philosophy of "loving wisdom" is a world view with a strict logical system. It studies the essence of the universe, the general law of the evolution of all things in the universe, the position of human beings in the universe and so on.

2. Politics: refers to the behavior of social governance, and also refers to the behavior of maintaining rule. Politics is the process of collective decision-making by various groups, especially the rule of a political entity, such as ruling a country, and also the supervision and control of a domestic and foreign affairs.

3. Law: it is the product of the country, and it is the basic law and ordinary law promulgated by the ruling class (generally referring to the ruling class in politics, economy and ideology) through certain legislative procedures in order to achieve the purpose of ruling and managing the country. Law is the embodiment of the will of the ruling class and the ruling tool of the country.

4. Literature: It is a language art and an aesthetic ideology in discourse. Poetry, prose, novel, drama, fable and fairy tale are all important literary forms. Literature expresses inner feelings in different forms, that is, genres, and reproduces social life in a certain period and region. As a discipline, literature includes China language and literature, foreign language and literature and journalism and communication.

5. Art: it can be a macro concept or an individual phenomenon. It is a process of perceiving, consciously thinking, operating and expressing objective or subjective things through capturing and digging, feeling and analyzing, integrating and applying (the process of combination of forms, the process of life of creatures and the development of stories), or a staged result in the form of feeling (seeing, hearing, smelling and touching).

References:

Baidu Encyclopedia-China Library Book Classification