Abstract:The urban underground pipeline information system is based on the technology of GIS, considering the pipeline characteristics with respect to the data complexity and hiding. The application framework is built on COMGIS, and the advantage of the information system for the urban underground pipelines based on ArcEngine is analyzed. The integration technology of GIS is used for the operating procedure in the data integration, information collection, information disposal and spatial analysis. The integration technology of Visual C# 2005 and ArcEngine is combined with the database of Oracle 9i database by applying ArcSDE. The system provides the function of spatial information extracting, processing, management, inquiry and statistical analysis, for professional information and spatial information with respect to underground pipelines, and for accurate positioning and dynamic management of underground pipeline data.