The aim of this study was to examine the relationship between parenting attitude styles, the perceived self-differentiation, and self-esteem of Christian college students. For this study, 296 of Christian students (115 males and 181 females) from 3 universities in Seoul and Gyeonggi area were surveyed. The data were analyzed by correlation analysis, ANOVA and multiple regression analysis. The results were as follows: First, overprotective parents have a negative impact on their children s healthy differentiation, independence, and self-esteem. Second, parenting styles were also shown to affect the perceived self-esteem. The students with high-care type parents showed higher self-differentiation and selfesteem. In conclusion, the results from this research could be applied to the case conceptualization and the establishment of counseling strategies for young adult clients who are experiencing problems with psychological independence from their parents. Also, this study could provide additional knowledge for the development of parenting education or counseling program for parents in churches.