Through the Database of Chinese Joumals, taking "game" and "social exchange" as examples and using the concept of "quote rate", this article investigates the current situation of the phenomenon-- "using but not citing" the references in Chinese academic papers. Furthermore, it makes detailed economic analyses on this phenomenon, including time utility analysis, academic status utility analysis, norm utility analysis,ethic utility analysis, and overall utility analysis. The conclusion is that the authors will choose the utility-maximized...