This study aims to restore the homogeneity of the inter-Korean language by examining the emotional level of the North Korean dialect. It was intended to find a new way to overcome the sense of heterogeneity in the inter-Korean language through an emotional understanding of the use of North Korean dialect by North Korean defectors. It was predicted that the heterogeneity of mutual languages could be overcome by understanding the inner emotions rather than the external agreement of the inter-Korean language. To this end, the relationship between dialect and emotion was theoretically examined, and the emotions of North Korean defectors toward the North Korean dialect in society were examined. Empirically, 80 North Korean defectors were surveyed. The contents of the survey were classified into six categories of social relations in the use of North Korean dialects and subdivided into 18 items, and presented as objective data.