A landscape represents a part of the local environmental characteristics consisting of nature, artificial factors, and human living condition, and is now emerging as the very important factor in the development and conservation of national land. However, due to the rapid economic growth and development-based land businesses during the past, environment-friendly and nature-friendly development was not realized so that the development considering the landscape of downtowns and highlands was not achieved as well. Thus, in this study, targeting the area in which development and rehabilitation are being Intelligent Spatial Data, and through the three-dimensional simulation before and after the development and rehabilitation, realistic landscape impact could be analyzed and the consequential problems by the development and rehabilitation were easily figured out.