David’cosmopolitan democracy is based on traditional liberal democracy,however his theory focuses on the legitimacy of democracy in globalization context.

In seeking to give answers to many problems posed by globalization, Cosmopolitanism advocates universal human rights,international distributive justice and cosmopolitan democracy as its basic values.

This thesis focuses on the multidimensional causes, characteristics, trends of world nationalism that rose at the end of the 20th century and it has exerted the influence to China and the international politics, economy and culture.

The Stoicism’s mind such as natural law、 individualism、cosmopolitism and equal conception is one of the main sources of western political culture,we should take the ideological heritage seriously.

At the same time he started developing the cosmopolitism and enlightenment,which gradually takes up the leading station in Lu-Xun s thought.

Chinese civilization has had the tradition of cosmopolitism ever since the ancient times.

Cosmopolitanism pays not only attention to universal ethic meaning,but also difference thought meaning,in this sense,cosmopolitanism is a cultural cosmopolitanism.

The thinking logic of cosmopolitanism demonstrates that the race is no longer a term to discriminate "us" from "others",and that an absolute exclusiveness is no longer predisposed.