Acute epiglottitis is caused by a bacterial infection, and the swelling usually subsides gradually within 5-7 days of treatment, although more severe cases may require a correspondingly longer period of swelling. Acute epiglottitis, also known as supraglottitis, is an acute inflammatory lesion of the epiglottis and surrounding tissues, primarily involving the supraglottis region of the larynx, caused by Staphylococcus aureus, Streptococcus hemolyticus, or allergic factors. The disease is usually characterized by a high degree of epiglottis edema, with clinical manifestations of systemic toxicity, dysphagia and dyspnea. Acute epiglottitis progresses relatively rapidly and patients should be seen immediately in the ENT department; at the same time, patients with less than 24 hours of onset need to be kept in the hospital for observation to closely observe respiratory changes, keep the airway open and actively control the infection. Most patients can gradually heal in 5-7 days after regular treatment, and the swelling and pain disappears; in a few patients, the condition is more dangerous and life-threatening, and longer treatment is needed to reduce the swelling. Patients are advised to take rest, exercise appropriately to enhance physical fitness, and adjust their dietary structure to minimize the consumption of spicy, oily and stimulating foods to promote recovery as soon as possible.