Objectives: A study with the following objectives: to describe some clinical, and subclinical characteristics and treatment results of acute laryngitis at Hai Phong Children's Hospital from January 1st, 2022, to December 31st, 2022. Subjects and method: A descriptive study using retrospective data from 111 medical records of inpatients with acute laryngitis. Results: This study showed that this disease was more common in children under 60 months of age, in boys than in girls, and in children from suburban areas more than in urban areas. The disease was popular in winter-spring with the most common symptoms such as hoarseness, barking cough, fever, stridor, and chest retraction. All the patients were cured or relieved with the use of nebulized adrenaline to relieve laryngeal dyspnea and corticosteroids in combination with injection, oral, and oral medications. Conclusion: The rate of children admitted to hospital with laryngeal dyspnea level II and III was still quite high in this study (36%). It is important to note the trend of increasing Influenza type B infection and decreasing RSV infection rates after the COVID-19 epidemic in children with acute laryngitis.