Green building is environmental friendly and aspirations, is the basis of economical and social development, the construction industry to ensure sustainable development, is the world's architectural development. According to "green building rating standards" in the definition of green building, green building is in the building life cycle, the maximum conservation of resources (energy, land, water and materials), protecting the environment and reduce pollution for the people provide health, application and efficient use of space, architectural harmony with nature. However, one-time construction costs of green building is higher, and lower operation and maintenance. Is because some of our more traditional architecture is still in the design phase, construction of the target or to meet basic human needs as the basis set, therefore, making green building construction projects, improve construction quality in the process of construction will bring some cost increased costs, according to green building and construction standards of the different quality, cost, cost is also different. To promote green building, therefore the construction should take into account the economics of green building, green construction costs play a guiding role, it is necessary to manage their life-cycle cost.