The purpose of this study was to investigate the effects of the Emotion Regulation program on anxiety, depression, and parenting stress for adolescent single mothers living in the facilities. To this aim, 20-session individual ERP were held at the C City-based counseling center for Eleven unmarried teenagers raising their children, 60 minutes a session. K-BAI, K-BDI-II, PSI/SF were administered as pre-and post-tests. To analyzed the data, this study used jamovi 1.0.0. and conducted t-test, Cohen s d. For qualitative analysis of Spradley(1980) conducted Domain Analysis. The results were as follows; First, ERP has reduced anxiety and depression in adolescent single mothers. Second, we found that the total stress of parenting stress has decreased, and sub-factor Parental Distress, Parent-Child Dysfunctional Interaction, and Difficult child have also decreased. Based on the results of the study, the treatment effects and suggestions for adolescent single mothers were discussed.