Currently, sustainability has become a global strategy of human society, in which the development of green building the one of the most significant aspects. However, the evaluation of green building is an obvious challenge. This paper proposed a green building evaluation index system of green building, with a fuzzy comprehensive evaluation method being given. The research on fuzzy comprehensive evaluation method has important theoretical and practical meanings for enriching and developing techniques and methods of green building evaluation, which may facilitate healthy and rapid development of green building.