As an example of SIMS (Student Information Management System) developed independently by School of Information Science & Engineering of Shandong Normal University, this paper introduces database design, specific realization of each function module and key technologies used in the system. In the. NET environment, using ASP.NET technology, Visual C # and JavaScript as programming language, this system accesses the database of Microsoft SQL Server 2005 with ADO.NET technology, and could be employed by users with high security following the access control mechanism of RBAC(Role-Based Access Control) on Web Services.