[Explain the cause] Acute laryngitis is an acute inflammation of the respiratory tract caused mainly by viruses, and is one of the common causes of acute laryngeal obstruction in children, often occurring in children aged 1 to 3 years, mostly in winter. 【Describe the performance】 Typical cases 1~2 days before the onset of the disease, there are symptoms of upper respiratory tract infection, followed by fever, hoarseness, barking cough and inhalational laryngeal wheeze in severe cases, children are often irritable, cyanotic, respiratory and heart rate accelerated, due to laryngeal mucosa edema, showing different degrees of laryngeal obstruction. 【Introduction of treatment】 1.Antibiotics: antibiotics are generally not used, such as secondary bacterial infection can be used. 2.Adrenocorticotropic hormone treatment: it can reduce the laryngeal obstruction and avoid making tracheotomy. 3.Oxygen therapy: If there is respiratory distress, continuous humidified oxygen inhalation therapy can be used. If hypoxia is aggravated and cyanosis is obvious, tracheal intubation to give oxygen or tracheotomy is feasible. 4.Appropriate sedation can be given to those who are irritable. Key education】 1. Diet: Give warm and cool liquid diet or temporary fasting. 2.Activities: Bed rest or reduced activities should be given. 3. Review time and indications: Generally, no review is needed. Special instructions】 1. The child should be sent to the nearest hospital for inpatient treatment. 2.The child should be placed in semi-recumbent position or head and neck back padded slope position to maintain a comfortable position. 3.Try to complete the required examination and treatment in a centralized manner to reduce unnecessary disturbances affecting the child’s rest. 4.Watch closely for changes in the condition and be prepared for tracheotomy at any time. 5.Patiently and carefully feed the child to avoid choking and coughing when feeding.