The purpose of this study is to vertify the correlationship and the effect of communication competence and interpersonal competence. In order to achieve this purpose, the results of 14,117 students from 72 universities (excluding duplicates) participated in communication competence and interpersonal competence of K-CESA in 2017 were analyzed. The result of this study appreared differently from those of related studies. First, the correlation between total score of communication competence, 5 subfactors and total socre of interpersonal competence, 5 subfactors was statistically significant, but the correlation was not high. Second, according to the level of communication competence total score, the difference beteween total score of interpersonal competence and average of 5 subfactors was significant. Third, speaking and writing subfactors of communication competence were found to affect both the total score of interpersonal competence and 5 subfactors. The most influential variables was speaking subfactor. However, debate and mediation subfactors had no effect on total score of interpersonal competence and 5 subfactors. The results of this study suggest that communication competence and interpersonal competence are difficult to correspond with competence concept and factor characteristics. Moreover, there is a limitation in interpreting related study results as the purpose of development and utilization of measurement tools is different. Nevertheless, this result is of significance in that it demonstrates direct correlations and influences are not significant as the results of the related studies.