General secretary Xi Jinping pointed out: Marx doctrine is a scientific theory, people's theory, practice theory, and constantly developing open theory. The layered theory of Marxism Sinicization is a theoretical tool based on the Sinicization of Marxism and serving the Sinicization of Marxism. It is one of the methods to systematically study the Sinicization of Marxism. The layered theory of Sinicization of Marxism is mainly based on the historical orientation of the theoretical achievements of Sinicization of Marxism. According to the basic principles of Marxism, it comprehensively analyzes the theoretical logic and theoretical relationship of the theoretical achievements of Sinicization of Marxism from multiple theoretical dimensions, and scientifically evaluates the theoretical positioning and historical role of the theoretical achievements of Sinicization of Marxism, Macroscopically build the framework of the theoretical system of the Sinicization of Marxism, further broaden the research channels of the Sinicization of Marxism, improve the theoretical system of the Sinicization of Marxism, enhance the vitality of the Sinicization of Marxism, and display the world value of the Sinicization of Marxism. The first level: Marxism - the concrete theoretical achievements of Marxism. According to the basic principles of Marxism, practice is the basis of theory and the standard to test the truth of theory; The value of theory mainly lies in that theory plays a great guiding role in practice. In the practical process of understanding and transforming the world, due to the different historical factors and realistic conditions, cultural genes and national characteristics carried by China, Cuba, North Korea, Laos, Vietnam, the Soviet Union and other countries or regions, the Communists deeply grasp the law of human social development and pay attention to integrating the basic principles of Marxism with specific reality The combination of historical orientation has formed a series of concrete theoretical achievements of Marxism, such as the Sinicization of Marxism. These concrete theoretical achievements of Marxism embody the practical characteristics of the historical orientation, inherit, enrich and develop Marxism, and ensure the guiding role of Marxism in the development process of Marxism. The second level: Marxism - Mao Zedong Thought - theoretical system of socialism with Chinese characteristics - thought of socialism with Chinese characteristics in the new era. According to the basic principles of Marxism, productivity determines the relations of production, and the relations of production react on productivity. In the practical process of understanding and transforming China, due to the different social backgrounds in which the theoretical achievements of the Sinicization of Marxism were formed, the main social contradictions faced by Marxism are a natural accumulation process of change. The Chinese Communists have always adhered to Marxism and developed Marxism, paying attention to the combination of the basic principles of Marxism with China's specific reality, It has formed a series of Marxist theoretical achievements with Chinese characteristics, such as Mao Zedong thought, the theoretical system of socialism with Chinese characteristics, and the thought of socialism with Chinese characteristics in the new era. These theoretical achievements of Sinicization of Marxism embody the characteristics of the times in the historical direction, inherit and develop Marxism, and emphasize the leading role of the main social contradictions in the development process of Marxism. The third level: Marx doctrine -- Mao Zedong thought - Deng Xiaoping Theory -- the important thought of "Three Represents" -- Scientific Outlook on Development Xi Jinping's socialism thought with China characteristics in the new era. According to the basic principles of Marxism, the economic foundation determines the superstructure, and the superstructure reacts on the economic foundation. In the practical process of understanding and transforming China, due to the different opportunities, risks and challenges faced by Marxism in successfully opening up the road of socialism with Chinese characteristics and comprehensively promoting socialism with Chinese characteristics, major topics of the times should develop and change with the changes of the world situation, especially the changes of the world's basic contradictions. The Chinese Communists take the initiative to comply with the development of the times, We have systematically answered this important topic from the perspective of theory and practice, and formed a series of theoretical achievements of socialism with Chinese characteristics, such as Mao Zedong thought, Deng Xiaoping theory, the important thought of "Three Represents", and the socialist ideology of China with Scientific Outlook on Development and Xi Jinping in China's new era. These theoretical achievements of socialism with Chinese characteristics embody the phased characteristics of the historical orientation, inherit, enrich and develop Marxism, and point out the leading role of major contemporary issues in the development process of socialism with Chinese characteristics. The fourth level: Deng Xiaoping Theory - the important thought of "Three Represents" - the scientific outlook on development. According to the basic principles of Marxism, the main contradiction stipulates and affects the existence and development of secondary contradictions and plays a decisive role in the development of things; The secondary contradiction restricts the main contradiction; The main contradiction and the secondary contradiction can be transformed into each other under certain conditions. In the practical process of understanding and transforming China, since the work center of the party and the state has shifted from class struggle to economic construction after the Third Plenary Session of the Eleventh Central Committee of the Communist Party of China, the Chinese Communists have focused on the main social contradictions, grasped and solved major issues of the times, opened up and led the road of socialism with Chinese characteristics, and formed Deng Xiaoping theory The scientific theoretical system, including the important thought of "Three Represents" and the scientific outlook on development, together constitute the theoretical system of socialism with Chinese characteristics, which is the inheritance and development of Marxism. Among them, Deng Xiaoping theory is the pioneering and foundation work of the theoretical system of socialism with Chinese characteristics, and the important thought of "Three Represents" and the scientific outlook on development are the enrichment and perfection of Deng Xiaoping theory. These theoretical achievements of socialism with Chinese characteristics reflect the characteristics of the times and stages in the historical direction, inherit, enrich and develop Marxism, and make theoretical preparations for socialism with Chinese characteristics to enter a new era. (outlook new era)