With the development of network information technology and the popularization of mobile terminal equipment, people's network practice activities are deepening day by day, and people's understanding has also undergone profound changes. The combination of ideological discourse power and cyberspace expands the source of discourse power, promotes the transformation of discourse subject, and also changes the mode of discourse transmission and the pattern of discourse power. In addition to using the state power to constrain people's behavior, the ruling class also needs to use the discourse system. Ideology can only express the will of the ruler if it is combined with the right to speak. The ideology of today's Chinese society should also reflect the characteristics of the times, reflect the... mainstream value of society, and explore how to construct the ideology of contemporary China. As a response to the background of world multi-polarization, economic globalization, cultural diversity, and social information. The construction of discourse power in mainstream ideology has a real need to be strengthened in China.