In today's global warming environment, countries are trying to reduce their carbon emissions. One of the most accepted and effective ways around the world is to develop the electric vehicle industry. China and the United States, as the two largest economies in the world, the development of the electric vehicle industry in the two countries can be a reference for the world, especially in the context of China's first electric vehicle sales. In the United States, as an automobile power, the electric vehicle industry is also developing rapidly, and gradually catching up with the pace of China. Therefore, by comparing the sales volume, technology and policies of the two countries, this study analyzes the similarities and differences between the industry in the two countries, aiming to find ways to develop the electric vehicle industry in the two countries and even the whole world, and jointly contribute to solving the global climate problem.