Carbon emission calculation method based on entire life cycle of building

The invention provides a carbon emission calculation method based on the entire life cycle of a building and relates to the technical field of carbon emission calculation. According to the features of carbon emission, carbon emission calculation is divided into four stages of building material production, building construction, operation maintenance and waste dismantlement. The method includes the steps that a carbon dioxide intensity value of building material production is determined; carbon emission coefficients in the material transportation and construction processes in the building construction stage are determined; carbon emission coefficients of consumed energy in the operation maintenance stage are determined; carbon emission coefficients of the construction technology and waste transportation in the waste dismantlement stage are determined; the total carbon emission amount of the building is calculated through collection; the unit area index and the per capita index are calculated, the indexes of the total carbon emission amount, the unit area carbon emission amount and the per capita carbon emission amount of the building in the entire life cycle are acquired, the carbon emission standard which the low-carbon building can reach is checked, assessment and affirmation are conducted, effective measures such as design, construction and operation are taken in each stage of the building, the carbon emission of the building is reduced, and the low-carbon level of the building is improved.