Two theories that are often invoked by cosmopolitanism and nationalism in constructing the ethics of cross-cultural communication. Based on the existing literature, this paper sorts out the legitimacy basis, basic demands, doubts and criticisms in the cross-culture communication of the two, and the bottom line ethical thoughts constructed according to them. To get out of the cross-cultural communication of ethical dilemma caused by the cosmopolitanism and nationalism theory conflicts , the article from the angle of the impact of globalization on cultural identity revealed cosmopolitanism and nationalism concept of liquidity, committed to a "spread" angle of view to re-examine the cosmopolitanism and nationalism under the condition of globalization the spirit of the kernel and its scope of validity to build a set of globalization under the background of cross-cultural communication ethics. This article advocates the world socialism as a main body between the principle of “understanding and cooperation”, the nationalism as an “emotional care” of the spirit, and on the basis of reconstructing a base line of ethics of the spread of the global order and procedural participation main body bring forward, advocacy in embracing the world socialist spiritual emotion to our compatriots on the basis of the protection of national concern.