With the increasing contradiction of economic development and environmental protection, the simple and crude development model of the construction industry in the past has not suited to the extensive development of sustainable social development needs. Today, more and more people are aware that green building is the inevitable trend of future building which is propitious to energy conservation and environmental protection. This paper uses the BIM application technology to explore the design platform of the green building. This architecture consists of two layers, one is composite layer made up by the presentation layer and the business logic layer, the other is database access layer. On this basis, Grey situation decision-making model is used to optimize construction scheme. The results show that we can reduce construction costs by improving construction engineering design quality and efficiency.
