Whether adenoids 13mm is serious or not should be judged according to whether the patient has clinical symptoms or not, usually no symptoms are not serious, and those who have symptoms are more serious. Adenoid hypertrophy does not have a clear value for the size of the adenoids, generally adenoid hyperplasia and hypertrophy and cause a series of clinical symptoms can be called adenoid hypertrophy. Adenoids 13mm for some patients with wide nasopharyngeal tract, does not affect the patient’s ventilation, and generally does not produce obvious adverse reactions, this time the condition is not serious, without special treatment. When adenoids 13mm obviously block the posterior nostril, it will cause hearing loss, tinnitus, rhinitis, sinusitis, snoring during sleep, open-mouth breathing and other complications, and in severe cases, it can also lead to sleep apnea syndrome and the appearance of adenoid face. Therefore, adenoids 13mm is more serious and should be treated in time. Adenoids 13mm should go to the hospital in time, standardized treatment under the guidance of the doctor, to avoid further development of the condition.