The purpose of this article is to raise the issue of the expression of pain in the Korean language that occurs at the medical and health sites, and to try to list the pain expressions needed to accurately express our pain level or type of pain. The expression of pain in the Korean language has the essential feature of [+pain], and the feature of [+region], [+aspect] and [+degree] are optional. Pain is very subjective, personal, psychological and physical, in which the person's characteristics are expressed in a language reflected in socio-cultural conventions. To identify the characteristics of more accurate pain expressions, the use of pain expressions by the general public should be investigated and the Korean-language research on them should be supplemented.