Because of their race and cultural differences，ideological differences，conflicting interests，foreign interference and other factors，inter-ethnic contradictions and conflicts in Middle East is very prominent，and constitute an important source of influence threaten regional security and stability. Ethnic issues in the region show the characteristic of universality，diversity，sectarian nature，the times and internationalization and so forth. Among them，the most typical one is Palestinian issue that has become one of the key factors affecting the war and peace of the Middle East after the Second World War.