Beijing 2008 Olympic Games is a grand event ofChina, also an historic opportunity for Beijing. Giving a high-levelOlympicGameswith distinguishing features is a solemn promise China and Beijing have made to the world.igh Technology always makes significant contributions to fulfill the great success of Olympic games, while remote sensing, Geographic Information System, andGlobalPositioning System are new technologies thatgradually been used for the planning and management. Dynamic monitoring of Beijing Olympic venue using remote sensing technology directly served the“GreenOlympics”in this project.This project is supported byMinistry of Science and Technology under the“Hi-tech Olympic Program”and the ChineseAcademy of Sciences under the“CAS Hi-tech Olympic program”. Institute of Remote Sensing Applications undertook the project and carried out the continuous and stereomonitoringwith focuses on the status and changesmade duringBeijingOlympic venue construction, delivered seasonaland annual reports, and developed virtualsmi ulating system forBeijing Ol ympicVenueConstruction, which serving as an mi portantspatial information source for“DigitalOlympics”.Multi-temporalhigh-spatial resolution data have been collected nearly for 7 years, with observation cycle 1 year for airborne remote sensing, and 3 months for satellite remote sensing. Using these satellites and airborne remote sensing data, we extracted thematic information for venue construction project (venue distribution, project schedule, old house breaking and building, etc.),traffic project (highway, railway, subway, etc. ), as well as environment project(greenbelt, waterbody, landuse, etc. ),and carried out thematic analysis and dynamic evaluation. All thesemonitoring results have been released in the form of seasonal and annual reports.Meanwhile, we developed a virtual reality system for Beijing Olympic venue construction and environment monitoring, and a virtualOlympic scenarios releasing and browsing system based on Internet, with our own copyright.Remote sensingdata and field data ofBeijingOlympic venue, WukesongGymnasium, and district fromHuixinEastBridge toXueYuan Roadwere first collected, and then virtual environmentswere built for them.OpenFlight formatwas adopted tomanage smi ulated data for these districts, and smi ulation system was developed throughmodel smi plification, real-tmi e rendering optmi ization and CPU performance optmi ization. And in the end a network virtual smi ulation system forBeijing Olympic venue construction and environment monitoring was developed using ActiveX/COM +/DCOM component technology andOSG (OpenSceneGraph) three-dmi ensional graphics engine.Those three-dmi ensiona,l continuous, and accumulated observation data and standard products were directly\ndelivered to the Beijing Organizing Committee for the Games of the XXIX Olympiad (BOCOG) and the Beijing authorities, which effectively served forOlympic planning and construction, providing scientific data and information for GreenOlympics”. Airborne remote sensing mi ages acquired in this projectwere used by the Construction& Project Planning Department of Olympic Committee and Beijing Municipal Commission of Urban Planning for OlympicPark planning and designing, traffic planning and designing for the park and its surrounding areas.