Abstract: The generation of network ideological discourse is the unity of internal logic and external logic. The understanding of dialogue among subjects, the reasonable construction of expression mode, the optimization of different contexts, and the smooth translation of different discourses constitute the generative logic of network ideology discourse. Among them, the formation mechanism of network ideological discourse has multiple factors, of which the speech symbol is the essence of network ideological discourse generation, the Internet technology is the key to network ideological discourse generated, the discourse demand is the source of power for the development of network ideological discourse, and the mainstream ideology is the core of network ideological discourse formation.