Intelligent green buildings are the latest development trend of Taiwan’s building industry. This research focuses on how to control the components and equipments in a building in accordance with the variation of environment and needs of users. In the research, the equipments (heat recovery ventilation, HRV) and components (top windows of ventilation tower) were automatically driven by various environmental sensors installed outdoor and indoor for controlling environmental conditions in real time. Meanwhile, it was helpful to energy saving and indoor environmental health (IEH). S house located in Chiayi of Taiwan is the object of the research. The intelligent environ-control system of S house can be divided into three parts: small weather station monitoring system, intelligent window scenario control system, and indoor monitoring and control system. The points of this research mainly are to construct a overall structure of the intelligent environ-control system, the logic and mechanism of intelligent window scenario control system, essential fresh air calculation, and the judgment on activation and operation of indoor monitoring and control system.