Abstract: The report of the 20th National Congress of the Communist Party of China pointed out that achieving common prosperity for all people is the characteristic and essential requirement of Chinese path to modernization, and stressed that we must closely focus on the main social contradictions in the new era to promote all work. Comprehensively studying, grasping and implementing the spirit of the 20th National Congress of the Communist Party of China, and solidly promoting common prosperity in solving major social contradictions, we should focus on grasping the theoretical basis for promoting common prosperity through solving major social contradictions from three aspects: fundamental driving force, leading role, and fundamental methods. It is necessary to systematically sort out the historical process of the Party's leadership of the people in solving the main social contradictions in order to promote common prosperity through the dialectical unity of history and logic. In the new stage of development, to solidly promote common prosperity by solving the main social contradictions, we must adhere to the theoretical requirements of Marxist theory of contradiction and draw on historical experiences, and seize the most arduous task of achieving common prosperity.

Key words: major social contradictions, common prosperity, basic social contradictions, major social contradictions, method of contradiction analysis