Pediatric acute laryngitis is a disease that affects infants and children aged 6 months to 3 years and is more common in those with respiratory distress. The disease is often secondary to acute rhinitis, acute pharyngitis and other upper respiratory tract infections, and is mostly caused by viral infections. The main symptoms include hoarseness, barking cough (puppy bark), and difficulty breathing. Severe cases may show wheezing on inspiration, significant depression in the supraclavicular fossa, suprasternal fossa and abdomen, hypoxia, and irritability. If left untreated, further development will result in pallor, respiratory weakness, circulatory failure, coma, and convulsions until death. The diagnosis of the disease can be established on the basis of its characteristic symptoms: hoarseness, laryngeal wheezing, barking cough, inspiratory dyspnea, etc. If necessary, direct laryngoscopy is feasible (this test needs to be performed with caution to avoid laryngospasm). The focus of treatment for pediatric acute laryngitis is to relieve the laryngeal obstruction. Effective and adequate antibiotics should be used early to control the infection, and hormones should be added to reduce the laryngeal edema when there are symptoms of laryngeal obstruction (breath-holding), so as to relieve the symptoms of laryngeal obstruction. Severe laryngeal obstruction should also be promptly performed tracheotomy.