Megaureter is a severe pathology of the urinary system. According to the World Health Organization, according to the number and structure of diseases, malformations of the urinary system organs in children occupy one of the leading places among pathologiesof all organs and systems. The purpose of the study was to determine the effectiveness of endoscopic methods for correcting megaurethritis in children. The study presents the results of treatment of 116 patients with refluxing and obstructive megaureter on the basis of the Department of Pediatric Surgery No. 2 Samara State Medical University for the period from 2010 to 2022. The results of the examination revealed that the urodynamic characteristics of positive results after endoscopic correction of megaureter in a period of 3-6 months indicated a clear depending on the treatment results from the method of forming a bolus in the area of the ureterovesical segment: for mild severity, the STING method was effective, for moderate severity -HITI, and for severe severity -HITII.