Type 1 diabetes mellitus in children and adolescents is a question of medical and psychological field. It is relevant to treat and maintain proper glicemic control from the very beginning of the disease. This may prevent from early development of diabetic-related complications. Family functioning is of a high importance in the course of chld's diabetes care. Cooperation between parents, medical service and teachers is needed to protect children from emotional problems and early complications. The role of the family seems to be irreplaceable.