Abstract: This paper proposes to build a system about pipe network information census and information entry, establish and improve the network information relational database, comprehensive pipe network drawing, pipe network information space database, three-dimensional pipe network parts model library and other work. By calling the spatial information and attribute information from different databases, this paper rapidly build three-dimensional network model.Using the technology of MD5 related with the real pipe model and property rights, superimpos on the original surface building (structure) building model, this paper introduces the same space-time reference,develops the ground to build (structure) building management platform, and implements the comprehensive of all kinds of 3D data visualization and dissolve analysis. The system can provide more intuitive decision support in urban underground pipe network management.

Key words: underground pipe network, spatial database, relating property rights, unified benchmark