The goal of this correlational study was to explore the relationship between Korean immigrant discipline (e.g., positive, appropriate, and harsh discipline) and children's social competence and behavior problems. Self-report data were collected from 58 mothers and 20 fathers of children aged from 3 to 8 years. Only paternal harsh discipline was positively correlated with children's behavior problems. Among specific discipline strategies, maternal physical affection, correcting misbehaviors, and reasoning were positively correlated with children's social competence. Paternal physical punishment (e.g., spanking, hitting, and raising arms) was positively correlated with children's behavior problems. Immigrant fathers need to learn alternative ways of managing children's misbehaviors.