From emphasizing the practical significance of the vernacular to paying attention to the aesthetic quality of the vernacular, from transmitting information in instrumentality level to presenting value in ontology level, the revolution of the language of the “May Fourth” fictions is no longer a passive option but a process approaching to the essence of language, through which language is becoming directly intimate with the time, the mass and the real social life. The “May Fourth” fictions opened up a new way of language from from instrumentality to ontology, but there are also misunderstandings. This historical process remains much to be explored, and a in-depth exploration is not only for the needs of the topic but also for its benefits to today’s reconstruction of literary language.