French foreign policy has played an important role in global politics in history. As one of the core countries in Europe, France's diplomatic decisions not only affect its own interests, but also have a far-reaching impact on the political landscape of Europe and even the world. In the past few decades, the process of globalization, regional conflicts, EU internal dynamics and other factors have continuously reshaped France's diplomatic strategy. In recent years, the rise of populism has been particularly eye-catching. It not only triggered great changes in domestic politics, but also had a far-reaching impact on France's foreign policy. As a political phenomenon, populism is usually characterized by anti-elite, anti-dism and an emphasis on national sovereignty and the will of the people. In France, the rise of populism is reflected not only in the words and deeds of politicians and political parties, but also in the attitude and voting behavior of voters. The impact of populism on French foreign policy is mainly reflected in its attitude towards the European Union, its position on immigration and refugee issues, and its attitude towards international cooperation and multilateralism. This article aims to explore the foreign policy transformation of France under the influence of populism from a multidimensional perspective and analyze the consequences of this change. By comparing France's diplomatic strategies in different historical periods, people can more clearly understand the role of populism in it and its potential impact on future international relations.