Objectives The purpose of this study is to investigate the discrimination of mothers' parenting characteristics according to socioeconomic background and analyze the effects of parenting characteristics on the young children's problem behaviors.
 Methods It was analyzed the socioeconomic background, parenting characteristics, and problem behavior of 2,150 mothers with 5-year-old children, using the 7th panel data of the Panel Study on Korean Children. Using the program SPSS 21.0, the mean differences in parenting characteristics according to the mother's socioeconomic background were analyzed using t-test and one-way ANOVA. In addition, after analyzing the correlation between the mother's parenting characteristics and the young children's problem behavior, hierarchical multiple regression analysis was conducted to analyze the influence of the mother's parenting characteristics on the young children's problem behavior.
 Results Mothers' parenting characteristics differed depending on the mother's age, education level, and household income level, and the correlation between parenting characteristics and young children's problem behavior was low. As a result of analyzing the factors affecting children's internalizing problem behavior, the higher the income in the socioeconomic background, the less internalizing problem behavior, and among parenting characteristics, the higher the parenting stress and the less parent-child interaction, the more internalizing problem behavior increased. As a result of the analysis of externalizing problem behavior, it was found that for male young children, the greater the parenting stress, and the less paternalistic parenting behavior and parent-child interaction, the more the infant's externalizing problem behavior increased.
 Conclusions System establishment and policy support are required to minimize the interdependence and connection between socioeconomic background, parenting characteristics, and problem behavior. Additionally, because mothers' parenting stress has the greatest impact on their children's problem behavior, mothers should seek ways to reduce stress themselves. Additionally, a consensus on co-parenting must be formed at the community and government levels, breaking away from the framework that childrearing is the mother's responsibility.