在面對快速轉變時代中，電子化政府重要目標是有效掌握IT之趨勢，落實政府資訊作業之進行，達到為人民服務更有效率、政策更具可靠性（accountable）及透明性之目標，因此IT已成為電子化政府不可或缺的管理工具，相對依賴IT程度亦不斷提昇，意味著IT是最重要資產，導至IT本身已經成為一個巨大的威脅，隨IT而來的風險、利益和機會，必然需要有效的IT管理和風險管理，與企業相同，IT治理成為電子化政府最關鍵成功因素。 IT治理用於描述組織是否採用有效的機制（就是為了鼓勵達到資訊應用的期望，而明確訂定決策權歸屬和責任承擔的一種架構），使得資訊科技的應用能夠完成組織賦予它的使命，同時平衡資訊科技與組織發展過程的風險，確保能夠實現組織的策略目標。 本研究以IT治理概念應用於個案機關進行資訊改造整體規劃之資訊組織設計，經由探索性之個案分析，整理深入訪談所獲得的資料，依COBIT之內部控制系統之IT程序為架構，進行個案研究，完成符合IT治理之政府機關資訊組織設計，讓IT為機關組織帶來應有的利益：提昇行政效率、提供民眾更好的行政服務品質，使資訊部門成為政府組織中重要價值之部門。最後提出研究結果與建議，作為個案機關辦理資訊改造整體規劃之政策參考。 關鍵詞：IT治理、電子化政府、資訊改造整體規劃、資訊組織設計 / In faces in the fast changing time, the main objectives to implement e-government inititiative include: tracking and catching up with the IT trends, realizing the benefits of modern information systems for governing, serving citizens more effectively, making governments more accountable for their policies, and achieving transparencies. IT is at the center of e-government in improving its management. IT has become an important asset for a government agency while the dependency on IT has increased; hence the associated risks. The IT governance has become an important approach and framework in managing IT organization and planning, acquisition and development, operation and services, etc. Better IT governance is a critical factor in e-government success. IT governance orchestrates how an organization shares IT related decisions and responsibility among various stakeholders such as top level management, functional area managers, and IT organizations. The objective is to ensure IT goals can be aligned with business goals while mitigates the risks involved. This research applies the IT governance concept to study how a government institute reengineers its IT organization via a case research method. This is an exploratory case study in which in-depth interviews in this government institute were conducted. Data collected are organized according to COBIT IT governance framework. COBIT emphasizes internal controls, and organized IT related processes into four domains. The potential benefits of this approach include: Manage government more effectively, provide high quality services to citizens, increase the contribution of IT department to its agency. The research findings and results reported in this study can be used by other government agencies in their IT reengineering efforts.