Method for calculating life cycle carbon emission difference between fabricated building and cast-in-place building

The invention belongs to the technical field of carbon emission calculation, and particularly relates to a method for calculating the carbon emission difference between a fabricated building and a cast-in-place building, which comprises the following steps of: firstly, performing stage division on life cycles of the fabricated building and the cast-in-place building, and dividing the fabricated building into five stages of building material production, transportation, site construction, use and maintenance and disassembly and recovery; the method comprises the following steps: dividing a cast-in-place building into four stages of transportation, site construction, use and maintenance, and dismantling and recycling, then calculating carbon emission of each stage, obtaining building material and energy carbon emission of each stage and worker carbon emission of the whole life cycle, and finally integrating calculation results to obtain the carbon emission of the cast-in-place building. The carbon emission diffe