Enlarged tonsils can mainly affect the function of the ear, nose and throat, producing local symptoms such as snoring, and at the same time, it can lead to systemic symptoms such as inattention. 1. Local symptoms: including snoring and open-mouth breathing during sleep, which can lead to obstructive sleep apnea hypoventilation syndrome in severe cases. Prolonged open-mouth breathing can affect the development of children’s facial bones, leading to maxillary bone lengthening and dental irregularities. Some of them can also cause rhinitis, sinusitis, secretory otitis media, resulting in runny nose, nasal congestion, hearing loss, tinnitus and other symptoms. 2. Systemic symptoms: may be manifested as poor nutritional development, slow reaction, inattention, teeth grinding, night terrors, and so on. If there is any discomfort, it is recommended to consult a doctor in time for diagnosis and treatment.