Laryngitis usually has acute laryngitis and chronic laryngitis in clinical practice. Acute laryngitis mostly has clinical manifestations such as hoarseness, laryngeal tinnitus and aspiration dyspnea. It is mostly seen in children and is often caused by: i. Upper respiratory tract infections, that is, most of them are secondary to colds, mostly viral infections. Second, allergic reactions, especially tachyphylaxis. It usually requires adequate antibiotic and high-dose glucocorticoid treatment. In contrast, chronic laryngitis mainly has clinical manifestations such as hoarseness, weakness of pronunciation and chronic cough, but there are no obvious symptoms of dyspnea. It is often caused by the following reasons: i. Smoking, alcohol consumption, spicy and stimulating diet. II. Long-term abuse of the voice. III. High temperature, high humidity, and environmental pollution. IV. Reflux esophagitis, etc.