Diabetes mellitus is one of the most common chronic diseases nowadays, and it is caused by a disorder of the secretion and/or action of insulin, and it occurs more and more often in children and adolescents. There are several different types, the most common of which are diabetes type 1 and diabetes type 2. It is a very challenging disease to treat, that is, it requires a combination of several different types of treatment that include the correct use of insulin, proper nutrition, self-monitoring of blood glucose and physical activity. Regular physical activity is a key element in the treatment of this disease, but its implementation requires a certain amount of caution and knowledge. There are also various factors that make it difficult to carry out activities with children, be it due to the unavailability of equipment, the appearance of fear of hypoglycemia, inadequate education of the parents themselves and people close to the children, but also of the professional staff who participate in the child's life. During the preparation of this work, a survey was conducted among parents and close relatives of children with diabetes, and the results show that most parents are not sufficiently educated about the proper implementation of physical activity, although most children spend a certain part of the day in some kind of activity or sport. Health workers, including physiotherapists, should carry out various activities in an economical and affordable way in order to promote this form of additional therapy in the treatment of this disease in children as much as possible.