With the rise of global trade protectionism

tariffs have become a key factor influencing the internationalization of new energy vehicle companies.This paper systematically analyzes BYD Group's overseas expansion strategy under the pressure of tariffs.By examining policy developments such as the US Inflation Reduction Act and the EU's anti-subsidy investigation

this paper reveals the competitive barriers BYD has built through vertical supply chain integration

localized production

and technological innovation. Empirical data shows that BYD's overseas revenue share will increase from 25.7%in 2023 to 34.2%in the first half of 2024

with gross profit margins remaining above 20%

demonstrating significant cost control and policy adaptability.This study proposes a four-pronged development strategy:"Consolidating the Foundation for Electrification -Overcoming Shortcomings in Intelligent Manufacturing –Deepening Globalization -and Building an Ecological Moat

"providing theoretical guidance for Chinese new energy enterprises to address trade barriers.