Abstract: Abstract: The implementation of the National Exploration and Development Planning is the major measure for safeguarding China's economic and social sustainable development, and also for improving the guarantee capacity of mineral resources. The integrated exploration is an important way to perform the National Exploration and Development Planning. Based on GIS and database technologies, the authors have developed the Integrated Exploration Information System (IEIS). The IEIS includes geographic data, geological data, mineral deposit data, mining data, potential evaluation results and some other data at four performing levels. The IEIS supplies such data as management, information browsing, map browsing, query retrieval, statistical analysis, data output, map production and the evaluation of the dynamic tracking. IEIS could be widely used as a platform, on which researchers can fully grasp geological background, ore prospecting potential and progress, and on which Integrated Exploration work can be supported and its progress and achievements can be shown. On the basis of IEIS, the national ore exploration information system should be built, where the data on geology, geophysics, geochemistry, potential assessment result and mining right can be integrated, and the new achieved data on spatial information geological and geographic maps as well as profile can be traced and added. The system can be an important information support for the national general strategic decision and detailed work arrangement.