Objective: To study the relationship between maternal behavior and behavior problem of their children Method: 765 mothers with children aged 6 to 11 were assessed with MBQ (maternal behavior questionnaire) and behaviors of their children were assessed with CBCL (Achenbach children's behavior checklist) Results: 12 0% of children was identified as having behavior problems Maternal supportive behavior decreased behavior problems of their children, while maternal un-supportive behavior increased that Conclusion: Maternal behaviors had a significant effect on children's behavior problem