The exterior of green building should emphasize the integration with the surrounding environment, harmony, static and static complementarity, so as to protect the natural ecological environment. Construction materials and decoration materials harmful to human health shall not be used inside the building. Indoor air is fresh, temperature, humidity is appropriate, make occupants feel good, physical and mental health. The construction characteristics of green building include: there are clear requirements for the geographical conditions of the building, there are no toxic and harmful substances in the soil, the ground temperature is appropriate, the groundwater is pure, and the geomagnetism is moderate. Green buildings should use natural materials as much as possible. Wood, bark, bamboo, stone, lime, paint, etc. used in construction should be inspected and treated to ensure that they are harmless to human body. The green building will also be equipped with solar heating, hot water, power generation and wind power generation devices according to the geographical conditions to make full use of natural and renewable energy.