Abstract:As the product carbon footprint is becoming the briefest information of environmentally friendly products, enterprises in 12 countries and regions around the world have already been required to implement carbon labeling system in the form of legislation currently. Carbon label, as an identification system of greenhouse gases emissions caused in the life cycle of product or service, will play a significant role in the reduction of carbon emissions. The calculation of product carbon footprint involves a variety of levels, including the national level, the organization level, the product level, and the product carbon footprint has become one of the research hotspots in the field of global climate change control. As to accounting for the carbon footprint, many countries, regions and organizations are gradually developing their own standards, including the Intergovernmental Panel on Climate Change (IPCC) for the national level, the International Organization for Standardized (ISO) for the corporate and product level, the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD) jointly for the corporate and product level, the British Standards Institution (BSI) for the product level, etc. The standards based on Life Cycle Assessment (LCA) are as follows: the ISO released the basic LCA standards, the United Nations Environment Programme (UNEP), the U.S. Department of Energy, the National Renewable Energy Laboratory (U.S) released specific LCA standards about the database construction and the analysis of Life Cycle Inventory. As listed above, there are many relevant international standards on carbon footprint accounting, and the relationships among them are complex. However, due to the wide range of relevant international standards on carbon footprint accounting and the complexity of the relationship among these standards, the application and exchanges of these standards are limited in the research and industrial communities. Therefore, this paper sorts and analyses the international standards on carbon footprint accounting. Firstly, through the review of carbon footprint accounting standards and life cycle assessment standards, the basic characteristics of the relevant international standards were outlined and the relatsionship among the international standards was drawn in a diagram. Then, various international standards' provisions were resolved from the point of view of the contents of the various stages of life cycle assessment framework, and it was specific to each point of the various standards' provisions of the different characteristics and logical relations. Finally, the significance of carbon footprint accounting from different levels, the basic characteristics and the relationship among the relevant international standards and the relevant international standards based on the life cycle phases were analyzed. It is of great significance for providing references in research and practice of carbon footprint accounting, providing methodological support for our carbon footprint accounting, and advancing the research process of carbon footprint accounting in China.