The world is facing an energy and environmental crisis, and is therefore actively promoting energy conservation, emission reduction and green development, and new energy vehicles have thus become the focus of attention. These vehicles, which use electricity instead of oil, are crucial to achieving carbon neutrality and have gained global consensus. In recent years, new energy vehicles have led the transformation of the global automotive industry and contributed to the sustained growth of the world economy. China has achieved leapfrog development in this field, leading the world in terms of industry scale and technology, and its complete industrial chain has enhanced its leading position in the global transformation of automotive electrification. However, despite the fact that China's new energy vehicle industry chain is the most complete and has competitive advantages, it still faces challenges in exporting, such as high tariffs and restrictions in the US and Europe. In order to explore the impact of these boycott policies on China's new energy vehicle industry, this study constructs a double-difference model (DID) to analyze the impact of these policies with tariff rates of each country as the control variable, which is expected to provide valuable reference for China's new energy vehicle export strategy.