Since the Eighteenth National Congress of the CPC, Xi Jinping has attached great importance to improving the level of social civilization. Marx’s theories of social formation and social structure provide a fundamental basis for grasping social civilization and improving the level of social civilization. The CPC has constantly deepened its understanding about improving the level of social civilization, which has prompted its focus to shift from the construction of social object civilization to the promotion of social subject civilization. To improve the level of social civilization in the new stage of development, we must take cultural construction as the path and focus on four aspects of work: improving socialist ideological and political education, strengthening citizens’ moral construction, promoting the creation of mass civilization projects, and focusing on the construction of network civilization. We must solidly promote the process of objectification and subjectification of cultural achievements and spiritual civilization wealth, promote human civilization and modernization, and enrich and develop new forms of human civilization.