The purpose of this study was to examine the influence of marital relationships on children’s problems, mediated by a mother’s parenting style. An online survey was conducted on 350 mothers (mean age: 35.06 years), with children aged 3-6 years (mean age: 4.19 years), to assess the effect of their marital relationship on children’s problem behaviors, and their parenting styles. The independent variable was the marital relationship, the dependent variable was children’s problem behaviors, and parenting styles constituted the mediating variable. The results showed that marital conflict mediated authoritarian parenting style and affected children’s problem behaviors. Marital conflict, mediated by permissive parenting style, influenced children’s prosocial behaviors. In addition, authoritarian parenting style mediated the relationship between marital support and children’s problem behaviors.