It is well known to the otolaryngologist that there are two distinct types of normal human cerumen. The dry type of cerumen is milky white or yellowish gray, brittle and dry in its nature, while the wet type is brown, sticky and wet. But there have been few papers which reported the incidence of wet cerumen and axillary odour in Koreans. From October 1978 to February 1979, a total of 4,000 male Koreans in the 20-21 year-age bracket were investigated comparing the types of cerumen in relation to axillary odour. In this study, the following results are obtained. 1) The incidence of dry cerumen in Koreans is 97.2% while the wet cerumen is 2.8%. 2) The incidence of axillary odour in Koreans with wet cerumen is 97.3%. 3) Since Koreans have a very low incidence of wet cerumen in the various Mongolian ethnic groups, it could be one of the indirect evidences that Koreans have a relatively pure blood line in the aspect of anthrology.