The purpose of this study was to identify the effects of main caregiver’s family resilience and parenting stress on child problematic behaviors. Through this, the study tried to find ways to reduce child problem behaviors, particularly using caregivers. Study participants were main caregivers of 800 preschoolers from eight different preschools located in Seoul and Gyeonggi-do. Main caregivers were asked to complete the Korean versions of the Family Resilience Survey (FRS; Walsh, 1998), the Parenting Stress Index (PSI, short version; Abidin, 1990), and the Children Behavior Checklist (CBCL, 1.5-5; Achenbach & Rescorla, 2000). Data from 441 caregivers were included in the final analysis and correlation and multiple regression analyses were conducted to examine possible associations between study variables and test a potential mediation of parenting stress between caregiver's family resilience and child problem behaviors. Results showed that belief system, which is a sub-factor of family resilience, had an effect on child problem behaviors. In addition, family resilience was confirmed to affect the problem behaviors of children only through caregivers' parenting stress.