Adenoids are lymphatic tissues located at the junction of the nasopharyngeal apex and posterior wall, between the pharyngeal crypt, also known as pharyngeal tonsils or proliferators. The adenoids are present from birth and are most prominent at the age of 6 to 7 years, and gradually shrink after the age of 10 years. In normal children, the adenoids develop to the maximum at the age of 6-7 years, and gradually shrink after the age of 10 years, and disappear in adulthood. Adenoid hypertrophy is diagnosed if the adenoids are enlarged and cause corresponding health problems. It is mostly seen in children aged 3 to 5 years. Diagnostic criteria for adenoid hypertrophy: Adenoid hypertrophy is diagnosed when clinical examination reveals positive signs of adenoids and is accompanied by one or more of the following 1-5 symptoms: 1. Complicated secretory or purulent otitis media, resulting in stuffy ears, hearing loss and tinnitus. 2.Complicated rhinitis and sinusitis, resulting in nasal congestion, runny nose, occlusive nasal sound, sleep snoring and open-mouth breathing. 3.Complication of sore throat, cough, coughing or asthma. 4.Long-term open-mouth breathing. 5.Nutritional stunting, slow reaction, inattention, night terrors, teeth grinding, urine loss, etc. It should be emphasized that even if a child under 10 years of age is found to have a red nasopharyngeal bulge on indirect nasopharyngoscopy or electronic endoscopy, a soft lymphoid mass on palpation in the nasopharynx, or an enlarged adenoid on nasopharyngeal X-ray or CT scan, adenoid hyperplasia cannot be diagnosed if there are no clear accompanying symptoms. Treatment strategy: 1. When children are diagnosed with adenoid hypertrophy, they should first consider systematic treatment of the associated diseases or symptoms with a combination of Chinese and Western medicine, while paying attention to nutrition and improving the immunity of the body, most of them are expected to be relieved or cured. 2. If the long-term (3-6 months) systematic conservative treatment is ineffective, adenoidectomy can be considered via oral or nasal endoscopy. If there is also palatine tonsillar hypertrophy or inflammation, the surgery can be performed together with tonsillectomy.