Urban construction is the important infrastructure of the city, and it is the material basis for the urban survival and development. In this paper, a NASUCI (Novel Analysis System for Urban Construction Information) is proposed. Using data mining technology, case-based reasoning technology, the system focused on providing better decision support for urban construction. The system is composed of user management, enterprise information management, geographical information management, construction information display, construction information management, urban construction information analysis, and comprehensive statistics. NASUCI can help urban planners from a large number of original data mining more effective information, and to provide the chart display, make the analysis of urban construction become more scientific and efficient.