The Wudongde reservoir area 3D visualization geological disaster information system is designed in this paper, based on the superiority of Skyline software and Skyline TerraExplorer API. It consists of two parts: retrieval browsing system and spatial analysis system. Retrieval browsing system has several functions, such as displaying, browsing, information retrieval, data statistics, querying, searching and printing. Spatial analysis system sets the core modules, including spatial calculation, terrain analysis and flood-inundated simulation. It is verified by application that this system can be used for displaying 3D scene of the Wudongde reservoir area terrain, providing decision support for the governor, reaching the design requirements wholly.
