Primitive society is also called "primitive commune" and "primitive communist society". The first social form in human history. The process of human production is also the process of the formation of primitive society. It has existed for two or three million years, which is the longest stage of social development in human history. The extremely low productivity is the fundamental reason for the slow development of primitive society. The main symbol of social productivity is the use of stone tools. The combination of labor is mainly simple cooperation, and the division of labor between people is mainly the natural division of labor according to gender and age.

People are single, unable to fight against nature, and must work together to seek survival resources, which determines the common possession of the means of production. At the same time, people can only work in an equal relationship of mutual assistance and cooperation, and products are shared and distributed equally by all members of society. The social organization of primitive society experienced two stages of development: primitive group and clan commune. Clan is the basic economic unit of common production and life characterized by the blood relationship between people in primitive society.

The clan has experienced two stages: matriarchal clan and paternal clan. The former shows that women are the main body of the clan, the lineage of clan members is calculated by matriarchal line, and the property is inherited by matriarchal blood relatives; The latter shows that lineage is calculated according to the paternal line, property is inherited according to the paternal line, and clan leadership falls into the hands of men. There was no exploitation and no class in primitive society, so there was no country. All major issues are decided by the clan meeting attended by all members.

Slave society is one of the five social forms of Marxism. Marxism believes that with the development of stone tools, the appearance of metal tools and the further development of production, labor productivity has been greatly improved. In addition to maintaining people's lives, social products began to have surplus. On the one hand, the emergence of surplus products makes it possible for some people to get rid of heavy manual labor and specialize in social management and cultural and scientific activities, thus promoting the development of production; On the other hand, it also prepared conditions for the emergence of private ownership.

With the emergence of private ownership, the exploiting class and the exploited class appeared in the society, the primitive society began to disintegrate and the slave society came into being. Slaves are regarded as the property of slave owners and can be bought and sold freely; Slave owners can force slaves to work, and labor activities must be dominated by slaves, without remuneration and personal freedom. In a human society, if most workers in the field of material production are slaves, then this social form is a slave society.

Feudal society refers to the social state of feudal system, which is an academic term commonly used by Marxist historians.

The "feudal society" mentioned by Marxist historians refers to the social form in which landlords or lords occupy land and exploit farmers or serfs. The "feudal society" of western scholars refers to the fiefs divided by co-owners or the central dynasty to members of the royal family, the royal family and heroes. It is a "system" of state management rather than a "society" and belongs to the category of political system.

The society in which the landlord class became the ruling class was a feudal society, and the contradiction between the landlord class and the peasant class was the main contradiction in the feudal society. The natural economy formed in feudal society is an economic structure organization based on land, combining agriculture with handicraft industry, taking family as production unit, which is self-enclosed and independent and mainly meets its own needs.