Abstract: Automobile manufacturing companies have long been recognized as large energy consumers and significant sources of carbon emissions. They have adopted a new practice of quantitatively assessing carbon emissions at the automobile manufacturing stage, which reduces the environmental impact while achieving the desired process performance. Various welding processes are widely used in the automobile manufacturing industry and carbon emissions vary from one welding process to another, however little research has been conducted on the carbon emissions of different welding methods. Achieving low carbon emissions from the welding process in automobile manufacturing is a necessary means of constructing low carbon manufacturing. This paper analyses the sources of carbon emissions from the welding process involved in automobile manufacturing, and at the same time summarizes the carbon emissions from the welding process in terms of accounting. Calculating the energy consumption and carbon emissions in the automobile manufacturing process helps to achieve energy saving and thus low carbon manufacturing. Therefore, the study of welding energy consumption and carbon emission analysis in the automobile manufacturing process is the top priority and a major trend in the future of low-carbon manufacturing.