Physical activity is an important part of a child's growth. Through physical activity, the child satisfies his need for movement and play, develops not only physically but also cognitively, emotionally and socially. Organized physical activity is very important for a child from an early age, because through organized physical activities, we create positive attitudes towards physical exercise, as well as healthy lifestyle habits. Investing in the physical activity of early and preschool children represents an investment in their future, and we provide the child with the foundations for a healthy and fulfilling life. This thesis describes the influence of physical activities on the overall growth and development of children, including its role, goals and tasks. In addition to the analysis of the impact of physical activity on the child's physical and psychological development, the work is primarily focused on the role of educators in the implementation of physical activities. Special attention is paid to the preparation and planning of physical activity, the competencies of educators, limitations when preparing and implementing physical activities, and the importance of cooperation with parents. Also, the paper highlights the need for continuous education and professional training of educators in order to ensure a high-quality approach to physical education of children of early and preschool age.