The purpose of this study is to examine the moderating effects of ego-resiliency on the relationship between parent-adolescent and high-risk adolescent s behavior problems. The participants were 330 high-risk adolescents (52.4% male, 47.6% female). The Strengths and Difficulties Questionnaire (SDQ-Kr), the Parent-Adolescent Relationship Scale, and the Parental Bonding Instrument (PBI) were performed and the data were analyzed with t-test and hierarchical multiple regression analysis. The results are as follows. First, high-risk male adolescents had lower communication than female adolescents, but attachment and intrusion were higher. They also showed more externalizing behavior problems, conduct problems, peer problems, and higher ego-resiliency than female adolescents, but emotional problems were lower. Second, high-risk middle school students had lower warmth and autonomy granting than high school students, but more involvement and intrusion. Third, in high-risk male adolescents, the moderating effects of ego-resiliency on the relationship between attachment, discipline, involvement, communication, autonomy granting and total behavior problems, attachment, discipline and externalizing behavior problems, attachment, communication, autonomy granting and conduct problems, and attachment, involvement, autonomy granting and emotional problems were statistically significant. Fourth, in high-risk female adolescents, the moderating effects of ego-resiliency on the relationship between intrusion and total behavior problems, and the relationships between frustration and conduct problems, attachment, warmth and peer problems were statistically significant.