The etiology of acute tonsillitis is said to be threefold, including systemic factors, immune factors, and adjacent organ infection factors. Specifically, the following are: 1. Systemic factors: including fire, i.e., a decrease in resistance. The bacteria will become conditionally pathogenic, multiplying causing infection, enlargement and blockage of the tonsils within a short period of time; 3. Inflammation of neighboring organs: including chronic sinus inflammation, snot reflux, purulent nasal mucus in the back wall of the pharynx, chronic inflammation or acute inflammation of the pharynx, in the anatomical structure of the mucosa is a continuation of each other, will spread to the tonsil tissue causing secondary infection, which is the most common three causes.