The purpose of this study is to overcome the heterogeneity of the inter-Korean languages, focusing on the relationship between the North Korean dialect and the identity of North Korean defectors. While the language problem has been seen as a challenge for North Korean defectors adapting to South Korean society, this paper shifts to view it as a task for South Korean families, highlighting the need for greater acceptance of North Korean language and culture. This paper argues that to restore the language identity of North Korean defectors, signficant changes are required in the ways in which South Koreans perceive, recognize, and accept North Korean dialects as part of a shared language rather than a political language.