This is a descriptive research study aimed to investigate the anger(state-trait anger, anger expression), depression, self-esteem and suicidal ideation of College students and relations among the factors. The data were obtained from distribution structured questionnaires to 487 College students in Busan. Begging March 1th to the May 31th of 2017, and analysis by t-test, ANOVA, pearson s correlation coefficient and multiple stepwise regression. The correlation state-trait anger(r=.348, p=<.001), anger-in(r=.198, p=<.001) and anger-out(r=.374, p=<.001) showed to be positivity correlated. Also the correlation between self-esteem showed to be negativity correlate(r=-.340, p=<.001). Anger and self-esteem were significant predictor and accounted for 21.0% of the variance in Suicidal ideation of College students. Based on the outcomes of this study, it is necessary to develop suicide preventing program to promote self-esteem based on anger control.