Abstract: Iris Marion Young was a famous scholar and activist in post-Rawls times, and the central issue in her political philosophy was how to deal with the challenge of justice in pluralistic times.By means of the conversations with marxism, liberalism, communitarianism and multiculturalism, her theory of justice has experienced many changes, such as the decentration from class to economic justice, away from the identity politics and beyond the national framework.In the process of reflection, her political philosophy focused on structural injustice in modern society and searched for the idea of justice, especially gave more attention to the disadvantaged.