Pediatric acute laryngitis is one of the most dangerous common laryngeal emergencies for children and can be considered the “killer” of children in the fall and winter. Because of the rapid climate change and dry air in the fall and winter, the incidence of laryngitis in young children is high. Statistically, the number of people who develop laryngitis from September to December each year accounts for 60-70% of the annual incidence, and it is common in infants and children aged 6 months to 3 years. Pediatric acute laryngitis is an acute inflammation of the mucous membrane of the larynx and upper trachea. Many children develop the disease in the middle of the night, starting with a coughing fit, sounding like a broken bamboo, a “hollow” sound (or barking sound), a whirring sound in the throat, as if there is phlegm can not cough, and gradually appear respiratory difficulties, at this time, the child is restless, blue lips, dripping sweat, and if the condition further aggravates, then If the condition further worsens, incontinence, asphyxia, coma and other symptoms will appear. These changes can occur within an hour or a few hours. This is because the laryngeal cavity of children is narrow and the laryngeal mucosa is delicate and lax. Once inflammation occurs, the swelling of the mucosa is particularly obvious, making the original narrow laryngeal cavity even smaller and the airway even narrower, and laryngeal obstruction occurs, causing breathing difficulties. In addition, the laryngeal cartilage of children is not yet fully developed, especially those who are growing faster, calcium supplementation can not keep up with the child’s laryngeal support is too soft. Once a baby has acute laryngitis, breathing difficulties can occur very easily. The only option is to get to the hospital in time for treatment, and never delay for a sick child with a low fever. It is especially important to remember: you cannot just take cough suppressants, some of which (such as those containing morphine) can cause difficulties in expelling sputum, thus aggravating the obstruction of the airway and further causing the possibility of asphyxia and delaying the chance of resuscitation.