President Xi Jinping’s latest scientific judgment on “sinicization and modernization of Marxism works” in the report of the 20th National Congress of the CPC is of important theoretical and practical significance. A deeply understanding of why “the sinicization and modernization of Marxism works” need further understanding the logic of “Marxism works”. It is essential that we rationality examine the reason of “the sinicization and modernization of Marxism works” from the theoretical logic, people’s logic, practice logic, world logic, providing fundamental principles for innovative sinicization and modernization of Marxism.