Preschool aggression is a complex phenomenon that manifests itself in both physical and social forms of behavior. It can be the result of individual characteristics, family dynamics, institutional factors. In the early years, aggressive behavior is often reactive - a response to frustration, lack of communication skills or imitation of models from the environment. Around the age of four, children begin to make logical connections, which allows for pedagogical and cognitive intervention. The family plays a key role through its attitudes, communication style and emotional support, while kindergarten is the first institutional context in which social skills and interaction patterns are formed. The large number of children in kindergarten groups, the weakened relationship between parents and educators and the lack of moral foundations can increase aggression. Effective prevention requires a partnership between parents and teachers, consistent strategies for managing behavior and promoting empathy and cooperation. In this way, aggression can be limited at an early age, and children can build sustainable skills for constructive social interaction that will accompany them in later stages of development.