Thisthesis examines how different collective memory and national identity of theRepublic of Korea and Japan affect their bilateral relationship. This is also dealwith the role of collective memory and national identity in the bilateralrelationship between the Republic of Korea and Japan. Of diverse conflictingissue between two countries, I studied territorial issue over Dokdo/Takeshimaissue because Dokdo/Takeshima issue is not only territorial matter but alsohistorical matter. So, there are frequent clashes over Dokdo/Takeshma betweentwo countries. To study this topic, in a theoretical framework, I utilizeconstructivism, collective memory and national identity to analyze differentideas of two countries. Furthermore, as I study coverage of media in twocountries, theory of news frame is also utilized. Analyzing media and statementsof two countries about Dokdo/Takeshima, I compared them and produced anintegrated analysis.