Cardiovascular diseases are the leading cause of death in Croatia, which is an indicator of how important it is to do everything we can to prevent the emergence of some of them. The paper is generally about the structure and function of the cardiovascular system, blood pressure, heart disease, the incidence of cardiovascular disease. The emphasis is on the various possibilities of prevention of cardiovascular diseases and what pre-school teachers and kindergarden as an institution can make to contribute to prevention. Here are some listed problems such as obesity, static lifestyle, improper diet, lack of physical activity that greatly contribute to the development of cardiovascular diseases and prevention methods such as proper diet, regular physical activity and similar. The important thing for pre-school teachers is to teach children the proper habits and behaviors from an early age.