The difference between materialism and idealism lies in whether being or thinking is primary. Materialism holds that existence is the first priority, while idealism holds that thinking is the first priority.

Materialism: materialism. Marxism holds that materialism is one of the two basic schools of philosophy, which is opposite to idealism. On the basic issues of philosophy, it is advocated that matter is the first and spirit is the second. The origin of the world is matter, and spirit is the product and reflection of matter. Basic viewpoints of philosophical ontology. Between consciousness and matter, matter determines consciousness, and consciousness is the reflection of the objective world in the human brain. The objective world is independent of consciousness, and subjective initiative is different from other life consciousness.

Idealism: it is idealism. Marxism holds that idealism is one of the two basic schools of philosophy, which is opposite to materialism. On the basic issues of philosophy, it advocates that spirit, consciousness or concept are primary and matter is secondary, that is, matter depends on consciousness and is the product of consciousness. It is a discussion and view on the relationship between philosophy and thought, mind, language and things.