As one of the most important stages in a project lifecycle, the construction stage consumes vast quantities of resources and energy and has become a control point for the low-carbon construction. The international stage of carbon footprint evaluation standard has been used in this paper for defining the carbon source in construction stage. A carbon consumption method based on BIM and other related software has been put forward firstly, along with the detailed calculation procedure which holds an important reference meaning to guide the low-carbon construction.