Traditional geographical infomation system uses file system to manage spatial data, which only suits to personal G1S (or named expert GIS)，but cannot meet the requirement of enterprise G1S. The technology of spatial database, which uses Relational Database Management System (RDBMS) to manage spatial data, is an advanced technology driven by the socialization of GIS application. Principle, system stmcture, route of establishing database, data structure of cadastral database of cadastral management in- formation system were discussed combined with the real conditions of Dongcheng District, Beijing cadastral management based on ArcSDE technology. 11ren, module design of cadastral management infornration sys- tem was elaborated.