Materialist dialectics: the material world is considered as a unified whole with universal connection and constant movement and change; Dialectical law is the law of the physical world's own movement; Subjective dialectics or dialectical thinking is the reflection of objective dialectics in human thinking.

It is the most comprehensive, rich and profound development theory.

It includes three basic laws (the law of unity of opposites, the law of mutual change of quality and the law of negation of negation) and a series of basic categories, such as phenomenon and essence, causality, necessity and accident, possibility and reality, form and content, with the law of unity of opposites as the core.

It is a kind of cosmology, epistemology and methodology.

Dialectical materialism: Dialectical materialism holds that the world is material in nature.

Engels said: "The real unity of the world lies in its materiality".

Matter is primary, consciousness is secondary, and consciousness is highly developed-the function of the human brain is the reflection of the objective material world in the human brain.

Dialectical materialism holds that the material world moves, changes and develops according to its own internal laws. "Everything is divided into two." It reveals that the fundamental reason for the development of things lies in the contradictions within things.

The contradictory sides of things are unified and also struggling, which promotes the development of things from low level to high level.

Therefore, the contradictory law of things, that is, the law of unity of opposites, is the most fundamental law of the movement, change and development of the material world.

Historical materialism: It holds that the ultimate cause and great motive force of all major historical events is social and economic development and the change of production mode and exchange mode. It is the result of the division of society into different classes and the struggle between these classes.

The difference between dialectical materialism and materialist dialectics;

Materialism is a world outlook and methodology opposite to idealism, and the root of their opposition lies in their different answers to the original questions of the world.

All views that matter is the origin of the world, that there is matter before consciousness, that matter determines consciousness, and that matter comes first are materialistic views; On the contrary, the view that consciousness is the origin of the world, that there is matter after consciousness, that consciousness determines matter, and that consciousness is the first belongs to idealism.

Dialectics is a world view opposite to metaphysics, and the focus of the opposition between dialectics and metaphysics lies in the different answers to "what kind of state is the world in"

Among them, it belongs to dialectics to admit contradiction and insist on looking at the answer to the question from the viewpoint of connection, development and comprehensiveness; It belongs to metaphysics to deny the existence of contradictions and advocate looking at the answers to questions from an isolated, static and one-sided point of view.

The difference between dialectical materialism and historical materialism;

Dialectical materialism is a science founded by Marx and Engels to study the general laws of nature, human society and thinking development by dialectical methods, and it is the world outlook and methodology of the proletariat.

Dialectical materialism holds that the world is essentially material, and material moves and develops according to its inherent law of unity of opposites. Existence determines consciousness, and consciousness reacts to existence.

Dialectical materialism and historical materialism are the theoretical basis of scientific socialism and the sharp weapons for the proletariat to understand and transform the world.

Historical materialism: the science about the most general law of human social development founded by Marx and Engels is an important part of Marxist philosophy and a proletarian world outlook.

Historical materialism holds that social and historical development has its inherent objective laws; Social existence determines social consciousness, and social consciousness reacts on social existence; The contradiction between productivity and production relations, the contradiction between economic base and superstructure are the basic contradictions to promote social development.

Also called historical materialism.

The difference between dialectical materialism and historical materialism lies in:

Dialectical materialism is a series of viewpoints of Marxist philosophy that matter (existence) determines thinking (consciousness) and is reflected by consciousness, as well as the existing form and motion law of matter.

The core is material first and consciousness second.

On the other hand, historical materialism is the reflection of Marxist philosophy on the existing social historical view.

Social existence determines social consciousness, and social consciousness has a dynamic role in social existence.

Marxism is not divided into dialectical materialism and historical materialism, but different names are used to emphasize different aspects of Marxism.

Marxist philosophy is both dialectical and historical.

Materialist dialectics belongs to the category of methodology, and dialectical materialism belongs to the category of philosophical world outlook.

Therefore, it can be said that materialist dialectics is a part of dialectical materialism.

Three links:

The three belong to the philosophical category of dialectical materialism. Marxist philosophy is dialectical materialism and historical materialism, and dialectical materialism is composed of dialectical materialism, materialist dialectics and dialectical materialist epistemology. Dialectical materialism is Marx's critical inheritance of outstanding achievements of human culture. In particular, it was established on the basis of critically absorbing the "reasonable core" of Hegel's dialectics and the "basic core" of Feuerbach's materialism. The birth of dialectical materialism is a great change in the history of philosophy, which overcomes the incompleteness of ancient naive materialism and modern mechanical materialism and truly realizes the organic unity of materialism and dialectics.

The three penetrate each other.

In dialectical materialism philosophy, materialism is the foundation, dialectics is the core and epistemology is the soul. In other words, materialism in Marxist philosophy is full of rich dialectical thoughts. If we only admit that the unity of the world lies in its materiality and deny the movement, change and development of the material world, then this is metaphysical materialism.

On the premise that matter determines consciousness, dialectical materialism also reveals that consciousness has a dynamic reaction to matter. Dialectical thought is based on materialism, that is, on the basis of admitting that the origin of the world is material, it further reveals the reasons, state and development trend of the connection and development of the material world. If we deny the materiality of the world and talk about connection, movement and development, it is idealistic dialectics.