Convergence of the information communication field, can be a means linked Services and Convergent·Integrative content. The convergence in the IT field refers to the Hardware·Software·Network·of Content & Service Convergence. This is 5A that is, anytime, anywhere, anyone and any platform, even in the core for implementing any device.The Convergence of hardware, data is a sense that not depending on the hardware. Some regardless in equipment, data can be utilized, the data must be synchronized between the devices further. In other words, it must be able to implement Any Device. The Sofware Convergence, data and contents is a sense that not depending on the hardware. Network Convergence, the data and possible hardware and software to not depend on the network also includes the sense that should not be. Final-oriented point of IT convergence is a convergence of content and services. Convergent·Integrative between the content, the bond between the content and services, ie, linked services and convergent·Integrative content. is required. And, these convergence environment must become a prerequisite.Therefore, as the open-public information should be provided not depending on species specific devices or software. For this purpose, a non-standard discard it must conform to standards, not the application, it must aim to web.If consideration of these convergence revolution, e-government of today, it is necessary to accessIt in aspects of online·offline, convergent·integrativeIt Paperless is a future direction to go is clear, the problem is a service to the G4C. Core of G4C is to provide the public information of the consumer center, take advantage of the private sector, is a variety of fusion-composite Paperless Service. The are several noted to build knowledge management system.First, knowledge management, that is, it must be the data management. Second, standardization is important. Third, OSMD that is, One Source Multi Device concept, it is necessary to manage the data. Fourth, not the application, it must aim to web. Fifth, in the order requires a high quality knowledge search, while performing a stylized-structured-typical Segmentation in data management to continue and repetitive, and a virtuous cycle of evaluation and results throughout the entire life cycle process of knowledge. The must contain a reflux system which can go to. Sixth, the Web-based knowledge management, web document can contain all of the orthopedic and atypical it would be a very important feature. Seventh, to minimize the human intervention as much as possible, it is important to automate as much as possible. Eighth, knowledge management should aim to consumers customize.The knowledge base of the information society, in order to make the data available in safely and any environment, it is necessary to take norms framework harmony on both sides of the technical issues and normative problems. In particular, in the Cloud environment, state of status and functions and administrative activities of conventional administrative is of course a major change of the study of public law also that never directly is maintained.As a basic principle of the method, the e-democracy, the e-legalism, the e-welfare is an important concept that does not change even in the convergence Revolution.Convergence revolution has continued, to go towards the future to find the the balanced contact of harmony, South Korea has to be accurately understand the direction and the way it should proceed for directing the e-government and knowledge management of IT powerhouse.