Abstract: The inevitability from city GIS to the urban management and service grid is introduced.The basic requirements which are needed to establish urban grid management and service grid are discussed.The method for dividing the urban grid is researched.The framework of urban management and service grid platform based on the spatial database has been designed,and the key technologies of constructing the urban management and service grid system are analyzed.The implementation flow of urban grid management and service system is elaborated.The authors take the grid construction of Wuhan city as an example to represent the system tentative plan.