The purpose of this study is to examine Korean language textbooks from the viewpoint of text-semiotics and to explore the applicability of text-semiotics as a methodology of Korean language textbooks research. For this, the definitions of texts were reviewed. And it was investigated how Begaugrande and Dressler’s seven standards of textuality are revealed at the point of ‘communication participants’, ‘acceptance patterns of Korean language textbooks’, and ‘structure of Korean language textbooks’.