Vesicoureteral reflux (VUR) is the abnormal flow of urine backing up from the bladder through the tubes (ureters) that connect the kidneys to the bladder. Normally, urine flows from the kidneys through the ureters to the bladder. It is not supposed to flow in the opposite direction, back to the kidneys. Aim:Identify risk factors associated with endoscopic treatment of VUR in children. Material and methods: A descriptive, retrospective study was carried out on 263 patients with a diagnosis of VUR who received endoscopic treatment, in Health Institutions of the City of San Francisco de Campeche, Campeche, during the period from January 2020 to December 2023. The variables studied were: age, gender, conditions associated with VUR, degree and laterality of reflux, injection technique, complications, severity and treatment of complications. A review of the medical records and files was carried out. The data were processed using SPSS version 23.0. To summarize the variables, absolute and relative frequencies were used; mean and range were determined for age. Results: Females predominated and ages ranged from 5 to 9 years, the average age was 6.12 years. 52.47% of patients presented bilateral VUR. In total, 401 ureteral meatuses were injected, VUR grades III (34.16%) and IV (31.42%) predominated, 11.40% of the sample presented a complete double excretory system. The most used injection technique was the STING (71.10%). 10.26% presented complications, urinary infection was the most frequent (6.46%) followed by late ureteral obstruction (2.28%). Most complications were resolved with medical treatment. Lower grade complications predominated. Conclusions: Endoscopic treatment of VUR is associated with few complications, the most frequent being minor. Late ureteral obstruction is the most serious complication. Long-term followup of patients is important to avoid irreversible kidney damage caused by sustained ureteral obstruction.