Journalism is aimed at constructing career ideals and career regulation theory hierarchies by using the journalistic professionalism. However, with the growing involvement of political and commercial powers, and the deconstruction of traditional channel hegemony by new media technology, the traditional journalistic professionalism have been challenged by diverse aspects. The journalistic professionalism theory, which gradually emerged in 1960s, was constructed based on the subject-centered rationality or instrumental rationality. In the network society environment the demerits of this theory can hardly be eliminated by simple mending, and hence new theoretical resources are needed. The concept of communicative rationality, proposed by Habermas, is the most feasible theoretical basement to reconstruct the idea of journalistic professionalism.