With the rapid development of Internet information technology, "web celebrity economy"arises and quietly influences the interaction form and consumption behavior of users. This paper selects four variables of media image, precision marketing, interactive communication and niche circle as the entry point, and uses the structural equation model to empirically analyze the impact of "web celebrity economy" marketing mode on college students' actual consumption behavior. The research shows that the promotion of precision marketing and niche circle will stimulate the actual consumption behavior of college students, while the influence of media image and interactive communication is not significant. Finally, combined with the research conclusions, the paper puts forward some suggestions for the future development of "web celebrity economy" marketing model.