The book continues to use quantitative and empirical research methods to summarize and analyze the achievements of government openness in China in 2020. It points out that in 2020, the exploration of standardization and standardization of government affairs openness is accelerating, decision-making openness is making steady progress, and government affairs services, administrative law enforcement, and management results are all making significant progress. However, in the future, it is still necessary to further enhance the awareness of openness, identify the needs of the public, integrate openness into the whole process of government affairs activities, and improve the level of information security. Besides, the book for the first time first carries out a third-party assessment of the government affairs publicity in the national free trade zones and free trade zones, and releases research reports on the publicity of administrative punishment information, government news release,work and production resumption information, and health science popularization information.