Objective: Describe the epidemiological aspects and analyze the management of adenoids in Niamey. Materials and methods: This was a retrospective study, on adenoids in children aged 0 to 15 years, managed in the ENT and Cervico-Facial Surgery department of the Niamey Reference General Hospital ( Niger) from November 1, 2016 to November 31, 2018 The studied parameters are: frequency, age, sex, factors favoring adenoids, type and results of treatment. Results: In 02 years, we received 128 cases of adenoids, an overall frequency of 9.85%. The average age was 3.12 years old. Men predominated (58.6%). Children aged 0 to 5 years accounted for 75.78%. The reasons for consultation were night-time snoring (49%), mouth breathing (62%), sleep apnea (36%), recurrent rhinopharyngitis (43%), recurrent otitis media (55%) and irritative cough (45%). Allergy to house dust mites was noted in 52% of cases, indoor and outdoor pollution in 30%. The treatment was pure medical in (35.6%) and surgical (adenoidectomy) in 64.4%. The evolution under treatment was generally satisfactory. Conclusion: Adenoids are common in children, ENT, Niamey (Niger). Children from 0 to 5 years are the most affected. The hot and dry climate, made of dust, is the most favorable factor. The treatment is pure medical or supervises the surgical procedure ('adenoidectomy). Keywords: Adenoids, epidemiology, adénoïdectomy, Niger.