The German Ideology contains rich ideology of human emancipation and has profound historical logic, scientific theoretical logic and distinct practical logic.The historical logic originates from the criticism on Young Hegelians and the understanding of “realistic man” in historical practice. Marx and Engels established the historical subject of human emancipation in the process of criticizing and inheriting Young Hegelians ideas,discovered the objective material basis of human emancipation in the process of interpretation of“realistic man”, placed human emancipation in the grand vision of the materialism conception of history on the basis of social practice without leaving “real life”in examining people in reality. From the view of the historical process of the emancipation development in The German Ideology , Marx and Engels established the theoretical basis,thinking method and research field of materialism,dialectics and historical materialism in studying this problem. The theoretical logic interprets the three stages of concept emancipation, labor emancipation and social relation emancipation in the evolving procedure of human emancipation.The practical logic points out the correct directions of the emancipation path such as establishing the materialistic position, promoting the great development of productive forces,changing the social environment,and carrying out the communist movement. Historical logic is the basis of thought formation, theoretical logic is the concrete manifestation of the core content of thought and practical logic is the unity of concrete and history and the guide of action. These three types of logic have jointly constructed the internal logic of human emancipation in The German Ideology ,achieving the scrupulous unity of historical necessity, the truth of theory and the correctness of path,providing a clear value goal and a direction of practical appeal to realize human emancipation.