工程移民指工程建设引起的非自愿的搬迁安置活动，工程移民决策包括规划决策和管理决策，这在国内外都是一个新课题，基于GIS的工程移民DSS是实施科学决策的有效手段，文章对工程移民决策支持的理论、方法进行了探讨，并结合万家寨工程移民决策支持进行了试验。

Resettlement and rehabilitation generally means the moving house not of one´s own accord and helping settle down caused by engineering projects. The decision includes layout decision and management decision and this is a new issue in China and abread. Based on GIS, the DSS for resettlement and rehabilitation is an efficient means for science decision. This paper probed into the theory and method of decision-making support for resettlement and rehabilitation, and made an experiment in line with Wanjiazhao Reservoiv Project.