The inherent generation of the dominant power in the university online public opinion field is determined by the coordinated operation of the generating subject, content, carrier and object. In the evolution of its generation mechanism, the source " encoding" is the logical starting point, the channel " decoding" is the logical unfolding, and the host " deco- ding" is the logical ending. They are interrelated and interdependent, and together they constitute an organic and unified logical system. In order to guarantee a benign generation of the dominant power in the university network public opinion field, it is necessary to reorganize the generating subject, reconstruct the generating content, rebuild the generating carrier and revitalize the generating object, enhance the guiding and appealing power of the dominant power of the university net- work public opinion field, occupy the high ground of the university network public opinion and guarantee the safety of the university network ideology