By the end of 2021，54 countries had reached carbon peak and 130 countries and regions had achieved or proposed the goal of carbon neutrality. European Union，the United States，Japan and other countries or regions promoted carbon peak and carbon neutrality by improving the machanisms of low-carbon development，advancing the reform of energy supply structure，promoting the green and low-carbon transformation of industries，and extensively conducting international cooperation and exchanges. The transition period from carbon peak to carbon neutrality in China is 30 years，which faces the many challenges such as short period，large base of emissions，high cost of emission reduction. Taking the experience of major countries，Fujian Province should further improve the green and low-carbon policy system，promote the green reform of energy supply，accelerate the optimization and upgrade of industrial structure，and explore the path of multi-national cooperation.