Materialist dialectics is a philosophical method to study nature, society, history and thinking. It is one of the three basic historical forms of dialectics; It was first put forward by Marx and developed by other Marxists (such as Engels, Lenin, Stalin and Mao Zedong). ) It is the core component of Marxist philosophy.

Materialist dialectics points out that "universal connection with all things" and "eternal development according to its own laws" are two universal basic characteristics of world existence, revealing the dialectical essence of the whole world; The basic laws and categories of materialist dialectics reveal the connotation and extension of these two basic characteristics from different aspects; The contradictory viewpoint (that is, the unity of opposites) is the core of materialist dialectics.