Objectives : This study was aimed to review the trend of tongue diagnosis studies in Korean Medicine on various aspect and to suggest better studies.
Method : We collected papers on tongue diagnosis studies in the internet site 'nanet, riss, dbpia, society' using the keyword 'tongue diagnosis' between 2002 and 2012. Then we analyzed them.
Results : There were 33 study papers that related in tongue diagnosis between 2002 and 2012.
Conclusions : To make a reproducibility and a objectivity of tongue diagnosis, it needs to have a unification of the system. So it is is necessary that having a discussion about the standard of tongue diagnosis.