Aimed at reducing the carbon emission in the process of design, production, construction and maintenance of asphalt concrete pavement, the carbon emission calculation method of OGFC asphalt mixture in the production process including raw material preparation, raw material transportation to the production base and mixing stage of the mixture is studied. The production process of OGFC asphalt mixture for drainage asphalt pavement is divided into two stages of material preparation and mixture production and mixing. Based on the mix design, material preparation scheme, production process, etc. of the mixture, the carbon emissions of each stage within the system boundary are calculated by using the emission factor method. According to the proportion of carbon emissions in each sub item, the appropriate carbon emission reduction measures are analyzed and proposed. Taking Shanghai Pudong New District High-class Road Jinhai Road Reconstruction Project as an example, the practical application of the carbon emission calculation method and carbon emission reduction technology proposed in this study is analyzed. The results show that the carbon emission reduction effect is remarkable.