Informatization in Korea has undergone significant changes. So far, most studies on informatization policies have been carried out just on the basis of their structural or functional backgrounds. However, actually, informatization policies have changed dynamically as a lot number of people and organizations have participated in their formulation and implementation. So, this study approaches them with an actor-network view that is distinct from but contains a chronological perspective, which other studies have overlooked so far. This approach allows us to have a clear picture of the changes in and to look into the characteristic of informatization policies from the Chun Doo Hwan government to the Lee Myung-bak government. Consequently, on the basis of the actor-network view, it is found that information and communication technologies, knowledge, and professionalism have dominated the characteristics and streams of informatization policies and brought about changes.