Abstract:  Currently, there are several shortcomings in underground space informatizationprocessing work in China, such as scattered data management, fragmented system, low level of fine management, low level of threedimensional integrated visualization of the whole ground and underground spaces, and the lack of application related to the development and utilization of underground space and safety operation management. Thus, considering underground space as an organic whole for overall management is necessary. With the concept of "lifecycle management" a technology combining the whole space (both ground and underground) data organization, integration, visualization, analysis, prediction, and evaluation is developed. Furthermore, an information management and service platform for underground space with the functions of information integration and management, rapid modeling, visual expression, auxiliaryplanning evaluation, safety monitoring and early warning, accident emergency command, and release sharing service is designed and developed. By applying this platform in a city, it is found that it can realize unified management, integrated expression, and intelligent service for urban underground and ground spatial data and provide strong support for the development and use of urban underground space. Thus, it guarantees the scientific management and safe operation and maintenance of underground space. 

Key words: underground space information, ground and underground integration, integrated management and service, integrated management and service platform of underground space