Abstract: The Communist Manifesto, the communist's programmatic document, went through three stages in its birth, resulting in three manuscripts:Draft of a Communist Confession of Faith, The Principles of Communism, and the final draft Communist Manifesto.Communist Manifesto is widely known, but the other two are rarely mentioned. In order to better understand the revolutionary, pioneering and breakthrough of Communist Manifesto, we made a comparative analysis tracing the origin of the Communist Manifesto and clarifying the background, evolutionary relationship, core content and contemporary significance of the three manuscripts of Communist Manifesto. We found out that expounding basically the same ideas on the roles of the capitalists and the proletariats in history, on the free and overall development of mankind, the three documents are the crystallization of Marx and Engels' thoughts on scientific socialism, reflecting the development of Marx and Engels' thoughts.

Key words: Draft of a Communist Confession of Faith, The Principles of Communism, Communist Manifesto, scientific socialism, Marx, Engels