The goal of this research is to show various usages and characteristics of deictic ‘ireohan’ and ‘geureohan’ used in spoken Korean. In order to accomplish this goal, this paper analyzed their frequency in Modern Korean Spoken Corpus of the 21st Century Sejong Project Corpus, examined registers where ‘ireohan’ and ‘geureohan’ were used in, and classified their deictic usages. The findings of data analysis showed that most of ‘ireohan’ and ‘geureohan’ were used in highly formal registers such as ‘discussion/meeting’ and ‘speech/lecture/ presentation’. It means that they are formal deictic forms, rather than written deictic forms. Most of their usages were textual reference usages, and conceptual reference usages were hardly found. ‘Ireohan’ was often used for situational reference as well. Most of textual reference usages of ‘ireohan’ were associated with ordinary textual reference, but those of ‘geureohan’ were associated with special textual reference, especially that of generalization function.