It is a cultural mission of the Chinese Communists in the new era to construct the discourse system of modern civilization for Chinese nation， and to write a new chapter concerning human civilization. From the point of discourse generation logic， the discourse system can consolidate its theoretical foundation with theoretical scientificity and openness， can cultivate its cultural genes with cultural inheritance and development， can underpin its practice with strategical rationality and effectiveness， and can secure its value essence with value morality and legitimacy. In view of principle of discourse refinement， the system pays significant attention to highlighting the political connotation between the political party leadership and the main body of the people， embraces the academic and rational support of the interaction between theoretical sublimation and practical summary， and contributes to promoting the popular expression of the transformation from theoretical discourse to livelihood discourse. For discourse practice， it is imperative for the system construction to consolidate the discourse foundation， enrich its content， improve its dissemination， and inspire the audience.