Adenoids, also known as pharyngeal tonsils, are physiological hyperplasia of lymphoid tissue in the nasopharynx that occurs at a certain age, and are present at birth in infants. If the adenoids are only hypertrophic and no complications occur, they can be considered as physiological hyperplasia and ignored. It is considered a disease that requires treatment only if it affects the general health or adjacent organs, with symptoms such as open-mouth breathing at night, snoring, ear pain, ear pus, persistent ear congestion, recurrent external sensations, and yellow runny nose. Adenoid hypertrophy has distinct age stages, and is sometimes called adenoid hypertrophy in children because it occurs mostly in childhood. This disease is easily diagnosed based on medical history, symptoms, signs and related examination results, and is often examined by routine ENT examination, pediatric-type fiberoptic nasopharyngoscopy and X-ray nasopharyngeal lateral radiography or CT examination. Because the ear, nose and throat are connected, when adenoid hypertrophy reaches a certain level, it may affect the ear, nose, throat, face, upper respiratory tract and even the whole body. 2. Nasal symptoms: Excessive adenoid hyperplasia affects nasal drainage and is often complicated by rhinitis and sinusitis, resulting in nasal congestion, runny nose, open mouth breathing, salivation, speech with occlusive nasal sounds, and sleep snoring. 3. Pharyngeal symptoms: foreign body sensation in the throat, throat clearing, coughing, sputum, voice change, etc. may occur. 4. Facial changes: Due to long-term open-mouth breathing, facial bone development is affected, resulting in narrow maxilla, narrow hard palate, protruding teeth, irregular teeth, poor bite, drooping jaw, thick lips, upturned upper lip, shallow and flat nasolabial folds, mental depression, dull and dull facial expression, which is called “adenoid face”. 5, respiratory tract infection symptoms: due to inflammatory secretions downstream, stimulating the respiratory tract mucosa, can also cause tracheitis and bronchitis, and even shortness of breath, fever and other symptoms. 6, systemic symptoms: mainly chronic poisoning symptoms and neurological reverse symptoms, manifested as poor nutritional development, chicken chest, anemia, emaciation, low fever, dyspepsia, easy fatigue, headache, inattention, boredom, easily frightened, irritable temperament, night sleep grinding, urination, etc.