隨著時代科技之進步，國有財產管理由圖簿管理邁向資訊化管理已行之有年，惟現今之財產管理系統僅能掌握地籍屬性資料及管理機關的產籍資料，單張地籍圖無法與土地使用現況等空間資料結合，以圖形顯示土地及建物的位置及其空間分佈的分析，並且隨時掌握最新異動情形，導致國有土地未能獲得有效管理運用，被占用情形屢見不鮮。 自從1960年代加拿大地理資訊系統（CGIS）開始運作至今，雖然已有50年之歷史，但在早期，主要工作平台均為價錢昂貴之工作站電腦，其軟硬體價位極高，只有政府或大型研究機構才能負擔，所以GIS始終定位在專業用途，小老百姓一直無緣享受到GIS的好處。不過在近十年來的發展，使用者介面及軟硬體功能均已有長足進步，目前國際標準組織（ISO）與OGC (Open Geospatial Consortium)分別致力於地理資訊系統相關標準制定，迄今已分別推出許多與地理資訊描述與應用之相關標準。且我國對於國土資訊系統（NGIS）之開發整合及流通亦已投注相當心力，種種跡象均顯示GIS之開發門檻已逐漸降低中，且其資料之流通性亦提昇許多，因此本研究將嘗試探討如何利用開放式地理資訊架構（OpenGIS）、免費軟體（Free Software）及開放源碼軟體（Open Source Software），結合Google Earth涵蓋廣闊之地理資源平台，用最經濟且符合實際需求之方式，以地籍圖、地形圖及現況照片，結合既有國有土地及建物的管理屬性資料及相關地理圖形資料，如臺灣基本圖及地形圖等，以GIS的圖形及地理分析功能，輔助國有土地及建物管理之運用。 / With the advance of technology, the management of the state-owned property has been shifted from using map and book to information-based management for some time. However, the property management system today can only get hold of the management of cadastral property information and property registration of producing agencies, yet the cadastral map is not able to integrate with the current land utilization and other spatial data to illustrate the location and to analyze spatial distribution of the lands or buildings. And the fact that cadastral maps cannot be updated in time to grasp the latest alterations has resulted in ineffective management and utilization of state-owned land and arbitrary occupation was not uncommon. It has been fifty years since the operation of the Canadian Geographic Information System (CGIS) in 1960s. However, in the early stage, the working platform were mainly expensive workstation computers, and the prices of hardware and software were so expensive that only the government or large research institutions could afford. Therefore, GIS had been used only for special purposes; the pubic had no access to enjoy the benefits of GIS. However, from the development of the past decade, user interface as well as the function of hardware and software has made a great progress. At present, International Organization for Standardization (ISO) and Open Geospatial Consortium (OGC) are separately dedicated to developing geographical information standards and they have launched many standards regarding the description and application of geographical information respectively. Much effort on the integration and the circulation of our National Geographic Information System (NGIS) sees that the threshold of GIS development has been reducing and its circulation of data also has considerably raised. Therefore, this research attempts to combine OpenGIS, Free Software and Open Source Software with Google Earth, a platform that covers a wide geographical resource, with the most economical and realistic approach to integrate cadastral maps, topographic maps and present-day photos with the data of land and building management, and related geospatial data such as base map and topographic maps, etc. By using graphics and geographic analysis functions of GIS, it can support the management of state-owned land and buildings.