Abstract: Studying the carbon footprint accounting method for pipeline transportation of refined oil products can provide support for the study on carbon emission characteristics and laws during the transportation of refined oil products. By determining the function unit and the evaluation boundary, a carbon footprint model of refined oil pipeline system was established and the carbon footprint was accounted, for which the specific steps include building the pipeline network structure, establishing the material balance, summarizing the emission inventory, adjusting the emission distribution, and calculating the carbon footprint. Based on the refined oil transportation data of an enterprise in Guangxi, the carbon footprint was calculated with this method, and the causes of carbon footprint in different transportation routes were analyzed, including the transportation distance, flow rate, pipeline routing and elevation, pipe specifications and other factors. According to the calculation results and the cause analysis, the recommended measures for reducing the carbon footprint during the pipeline transportation of refined oil products were proposed, and the study results could provide some reference for reduction of carbon footprint in the refined oil pipeline system.