This research examines the role of parents in parenting patterns that influence children's aggressive behavior. This study uses qualitative descriptive methods through interviews and observations to collect data from parents who have children with aggressive behavior. The results of the research show that the parenting style applied by parents has a significant effect on children's aggressive behavior. Harsh parenting and not showing empathy causes children to behave aggressively, such as pinching, pushing and grabbing toys. Authoritarian and permissive parenting styles without adequate control tend to increase aggressive behavior in children. In contrast, warm and caring democratic parenting tends to reduce aggressive behavior and support children's healthy emotional development.