In 2007，The UK pioneered the carbon label system in the world. As the system was launched，more and more countries paid attention to it and applied it to their products. At present，carbon label system has been applied in 43 countries and areas around the world，including the United Kingdom，Germany，Sweden，Switzerland，France，the United States，South Korea，Japan and Australia. This report makes a detailed analysis of carbon label development process of the above-mentioned countries and analyzes the system of each country from the aspects of origination，organization-in-charge，label design，implementation object，coverage industries，and their effects，and concludes its guaranteed mechanism into four aspects：national strategy，certification standard，enterprise participation，and environmental awareness. This report can provide international reference for China，which is conducive to accelerate the exploration and practice of our carbon label system，as well as to help the green development and realization of the “30·60 goal”.