Chronic tonsillitis is primarily caused by repeated acute tonsillitis attacks or due to poor drainage in the tonsillar crypts, where bacteria and viruses breed and infect, leading to chronic inflammation. It is mainly divided into three types: hyperplastic, fibrous, and cryptic. Clinically, it mainly manifests as sore throat, susceptibility to colds, and a history of acute tonsillitis attacks. Usually, there are few self-perceived symptoms, which may include dry throat, itching, foreign body sensation, and mild symptoms such as irritative cough. If cheesy decayed material or a large number of anaerobic bacteria accumulate in the tonsillar crypts, bad breath may occur. Excessive enlargement of the tonsils in children can lead to respiratory distress, snoring, or swallowing and speech function disorders, requiring surgical treatment. If chronic tonsillitis frequently inflames, accompanied by acute fever more than five times a year, or affects swallowing and breathing, surgical treatment is necessary; otherwise, it may lead to severe diseases such as rheumatic heart disease or nephritis.