Abstract: The internal logic of taking Marxism as the guiding position in the field of ideology is an intact system in which the relations among various elements are dialectical. As a fact, theoretical logic is the premise, historical logic is the basics, struggle logic is the key, and practical logic is the main idea. In the new era, to deep understand and accurately grasp those logic will strengthen the guiding position of Marxism in the field of ideology and ensure the political belief of Marxist for Chinese Communists Party. Ensuring the political direction of Socialism with Chinese Characteristics to prevent from “changing the flag” is of great theoretical and practical significance.

Key words: Marxism, ideology, guiding position, theoretical logic