Abstract:
Before the formation of the communist ideology of Marx and Engels, various so-called socialist and communist ideologies
raged. Marx and Engels created a scientific communist ideology based on criticizing various socialist and communist trends and laid a
solid foundation for leading the proletarian workers' movement. Their communist ideology is the basic theory of the scientific socialist
theoretical system. It is an important part of the development of Marxism. It shows Marx and Engels' blueprint and ultimate pursuit of
the beautiful future of human society, and points out the way for the civilization of human society. Marx and Engels constructed
communist ideology in criticism, and combining the developmental rationality and spiritual essence of communist ideology has positive
theoretical and practical significance for adhering to and developing socialism with Chinese characteristics in the new era.

Key words: Marx, Engels, communism