Building a culturally strong country is the key step and main content of realizing national modernization. Since the 18th CPC National Congress, the CPC Central Committee with Comrade Xi Jinping as the core, based on China’s national conditions and the trend of world development, has coordinated all aspects of national governance and placed the construction of a culturally strong country in the strategic layout of realizing the great rejuvenation of the Chinese nation. It has not only made scientific strategic plans for the building of a culturally strong country, but also formed a set of strict strategic system with the overall goal of building a culturally strong country, the consolidation of mainstream ideology, the cultivation of socialist core values, the improvement of moral ethical quality, the prosperity of socialist literature and art, and the coordinated promotion of the development of cultural undertakings and cultural industries. It has also constantly transformed the strategic design of building a culturally strong country into concrete implementation strategies. The concrete practice points to cultural innovation, cultivation of cultural subjects, development of cultural industry system, promotion of the party’s cultural leadership, improvement of social civilization and construction of cultural China. The concrete practice plan is formulated for the realization of a culturally strong country, promoting the new development of the practice of building a culturally strong country in the new era.