Adenoids are located at the junction of the top and back wall of the nasopharynx, between the two pharyngeal sockets. Adenoids, also known as pharyngeal tonsils, are usually located at the junction of the top of the nasopharynx and the posterior wall of the nasopharynx, between the pharyngeal sockets on both sides, resembling half a peeled orange, with an uneven surface and 5-6 longitudinal grooves. It constitutes the pharyngeal lymphatic ring, which is a part of the upper respiratory defense system. Generally, adenoids are present at birth and reach their peak of development at the age of 6-7 years, and gradually shrink with development after the age of 10 years, but they can also be present in some adults. Bacterial and viral infections can cause inflammation of the adenoids, resulting in hypertrophy of the adenoids, which can lead to snoring, open-mouth breathing, nasal congestion and other symptoms, and in severe cases, can affect the child’s facial development and growth. Adenoid hypertrophy with the above symptoms requires surgical treatment. Generally, general anesthesia low temperature plasma adenoidectomy is adopted.