With the growing and improving network services, diverse interests of users have been satisfied, and the same resources have been visited repeatedly becomes a common phenomenon. Thus, in the process of data transmission, the duplicate transfer in the large-scale network topology will inevitably lead to a huge waste of resources, which commonly exists in the campus network similar topology environment. In this paper, we based on the VC(visual C++) and MySQL software develop platform, and used three-layer-mining technology to carry out excavation on the reputation data and statistical analysis.