As public awareness of global warming increases, the construction industry requires more knowledge than ever about environmental issues. Now a new generation of scientists, architects, and engineers are radically rethinking how we build. In recent years, the issue of public toilets has developed from an inconvenient subject into one that attracts great attention. However, the effort to make them more sustainable is still insignificant compared with that of other types of buildings. The purpose of this paper is to analyze the problems of public toilets and green building certification programs, to draw basic data through the use of a survey and to facilitate the utilization of appropriate sustainable design elements to create environmentally responsible public toilets. There was no specific guideline for the green public toilet, so the sustainable design elements were set based on the national green building certification program. However the crucial factors in the survey differed from what was considered important in the program such as energy, water resource and interior environment.