It`s been 73 years since the Korean Diaspora of Russia·CIS were forced to move to Middle Asia. In September, 1937, almost 170,000 of them were abruptly forced to leave behind the lands they`ve been living. After being forced to move into Middle Asia by the Soviet Union, they had no freedom to emigrate to any other places until a law named, "About measurements of restrictions on the legal status of residence of special emigrants", that gives the minimal right for them to emigrate, has been announced in 1956 by the supreme council of the Soviet Union. To the Korean Diaspora of Russia·CIS, this forced migration(deportation) took away everything they had until the very moment. Also it was a desperation for them since they couldn`t expect any help and they had to start a new life right in the middle of a wilderness. All these desperate circumstances wobbled their identity as Korean race. The deportation of the Korean Diaspora of Russia·CIS gave an big impact on change of their identities. It was also an big incident to deport an entire race that reaches 170,000 people. It`s not appropriate to think that this kind of big incidence happened only by couple of reasons. Rather, it would be right to think that there were so many reasons like political, social, cultural, economical, and several other reasons come together. These kind of various reasons have keep being influencing their politics, guidelines, and their identities even after the deportation. Nevertheless in-depth study of the reasons weren`t enough. The primary goal of this paper is to find and analyze the reasons of the deportation, and it would be an basis of studying the racial identity of them which would be the ultimate goal. Recently Russia is revealing some of the informations about the history of Soviet Union that was kept secret, showing that Russia is different from the Soviet Union and is a capitalistic and democratic country. That is, in order to free themselves from Soviet Union Russia is revealing the faults and shameful history of the Soviet Union. On this basis they`re revealing ome of the documents about the deportation of Korean Diaspora of Russia·CIS, and this is giving clues to find out the reasons of the deportation. In addition, easier contact with the Koreans dwelling in Russia and those people living in Korea made it possible for us to find out the reasons that were hidden deep inside. After the collapse of Soviet Union in 1991 and establishment of diplomatic relations with Russia in 1992, contacts with Korean Diaspora of Russia·CIS have become much more frequent. 70 years of alienation of political, economical, and cultural circumstances, however, made distinct boundaries between them and Koreans. These boundaries caused misunderstanding, making them to distrust Koreans, even though they are the same races. Understanding each others must be preceded in order to eliminate their distrust. The research analyzes the possible reasons of the deportation for the basis of a better comprehension of these people.