Korean honorific expression is the element of context-dependent. Meanwhile Korean honorific expression was described focused on sentence and analysis in Korean Grammar Textbook. Korean Grammar textbook producted by based on 2009 Revised Curriculum is described unit learning focused on discourse. But still It is focused on analysis and fragmented knowledge. Korean honorific expression is speaking syntagmatically and synchronistically in actually discourse. Be like this, These would be described unit learning in grammar textbook. I should consider a context in the real discourse situation with a use aspect of Korean honorific expression after all, and should describe grammar education contents by an inductive method.