This paper will discuss the useful principles for rainwater conservation strategies for green buildings under considering Feng Shui issues. Rainwater conservation is one of important assessment index of the green building accreditation and help for improving soil the water content and the urban heating situation. By green building evaluation manual from the government department and researchers, some strategies such as drainage ditches, water storage ponds and artificial planting hole were relative to some issues of Feng Shui for dwellings. When we worked hard for promoting green buildings, and the Feng Shui issues also could be considered, it will help to hasten the green buildings forwards and present respect for traditional culture. To find out the useful principles for both considering rainwater conservation strategies and Feng Shui issues is main purpose of this study. This research will apply with the literature review and content analysis to process this study, and seek some results can help to solve rainwater conservation of green buildings and the Feng Shui problems.