The book localization system based on RFID technology produces few desired results in universities; the system needs to be reconstructed because finding target books is still challenging. The library’s localization system of China University of Petroleum based on RFID technology is adopted in this study. Combined with the practical procedures of circulation and shelf arrangement, the frameworks of Python and Django and the Oracle database are used to develop the backstage management module of the system. In addition, the localization data collection, database structure, and the calculation of localization are upgraded. The improved book localization system based on RFID technology is easy to manage and maintain, effectively solving the problem of finding target books.