Materialist dialectics is Marxist dialectics. Take the most common laws of nature, human society and thinking development as the research object. It is an advanced form of dialectical thinking development. An important part of Marxist philosophy. It is believed that the material world is 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. They correspond to different philosophical categories. Materialism is a world outlook and methodology opposite to idealism. 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. The basic views of the two are different. The basic viewpoint of dialectical materialism is that the origin of the world is matter, and it is argued that matter determines consciousness, and consciousness is the reflection of matter. At the same time, consciousness has a dynamic reaction to matter. It is the foundation of the whole Marxist philosophy to admit that the world is material and that material has objective reality. The basic viewpoint of materialist dialectics holds that the world is an organic whole with universal connection, and at the same time it is changing and developing, and connection and development are the general characteristics of dialectics. It is the core of Marxist materialist dialectics to admit contradiction and look at the problem from the viewpoint of contradiction, which reveals three laws contained in the development of things-the law of unity of opposites, the law of mutual change of quality and the law of negation of negation. Methodology requires different dialectical materialism to proceed from the dialectical relationship between matter and consciousness, and requires us to proceed from reality in thinking and doing things, so as to achieve the unity of subjective and objective concrete history. To make the subjective conform to the objective, we must prevent subjectivism. Materialist dialectics, starting from the understanding of contradictions and internal contradictions of things as the fundamental driving force for the development of things, requires us to adhere to the viewpoint of unity of opposites and look at problems from the viewpoint of connection, development and synthesis. Adhering to the unity of opposites means opposing metaphysics. [Edit this paragraph] The connection between dialectical materialism and materialist dialectics 1 Both belong to the philosophical category of dialectical materialism. Marxist philosophy is dialectical materialism and historical materialism, and dialectical materialism consists of dialectical materialism, materialist dialectics and dialectical materialist epistemology. Dialectical materialism was founded by Marx on the basis of critically inheriting the outstanding achievements of human culture, especially 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 two permeate each other. In dialectical materialism philosophy, materialism is the foundation, dialectics is the core and epistemology is the soul. In other words, the materialism of 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, that is the dialectics of idealism. In addition, it should be emphasized that to master materialism, we should start with the most basic concept-material manpower. Material is the most basic concept of Marxist philosophy. To correctly understand the connotation of material concept, we must grasp its unique feature-objective reality. The "objective reality" here is abstractly summarized from everything covered by nature and human society. It is the same essence of all things, which is not possessed by * * * consciousness. To understand dialectics, we should start with the most basic viewpoint of dialectics-contradiction, because contradiction is the root of universal connection and eternal development in the world. First of all, contradiction is the fundamental content of connection, and the connection between things is, in the final analysis, the connection between contradictory parties in things that are both opposite and unified; At the same time, contradiction is the driving force for the development and change of things, and the internal contradiction of things is the fundamental reason for the development and change of things. Contradictory viewpoint is the core of materialist dialectics, and only on this basis can we understand the overall characteristics of materialist dialectics-the viewpoint of connection and the viewpoint of development. In a word, Marxist philosophy is a scientific world outlook and methodology, and its views on the whole world and the relationship between people and the world are both materialistic and dialectical. Dialectical materialism and materialist dialectics are two red lines that run through the whole Marxist philosophy. Both of them have the same research object, but their research angles are different. To study the nature of the world, we should use dialectical views, otherwise we will fall into metaphysics; The research of dialectical method should be based on materialism, otherwise it will fall into idealism. Marxist philosophy is both thorough materialism and dialectics, which embodies the high unity of materialism and dialectics.