The concept of modern functional endonasal sinus surgery in the pediatric population is based on sparing, minimally invasive interventions within the middle nasal passage, mainly the ostiomeatal complex, performed taking into account modern knowledge of the physiology of the nasal cavity and paranasal sinuses, as a result of which normal can be restored as soon as possible aerodynamics in the nasal cavity; respiratory and other functions of the nasal cavity and paranasal sinus are restored. The article presents the history, modern principles and indications for pediatric sinus surgery. The features of preparation, management of the postoperative period and the effectiveness of sinus surgery in the age aspect are described.