Juvenile adenoid hypertrophy is mostly due to repeated inflammation of the nasal cavity, allergies, and stimulation of the adenoids, causing congestion and swelling of the adenoids, filling and causing hyperplasia and hypertrophy, which can lead to snoring, breath-holding, hyperactivity, otitis media, sinusitis, and even the formation of adenoidal facies, such as protruding upper incisors, thick lips, and high arches of the jawbone. Therefore, active treatment is required. Early on, physiological seawater can be given to rinse the nasal cavity to flush out the allergens, thus reducing the occurrence of allergy, and oral montelukast chewable tablets and mometasone furoate nasal spray can be given for a treatment course of 4 weeks. If the effect is not good after treatment, surgical treatment can be used. At present, most of the adenoids ablation under plasma assisted by nasal endoscopy, which is minimally invasive, has the advantages of small trauma, less bleeding and fast recovery.