Hoarseness in children is common in the following cases: 1. If hoarseness occurs acutely, most of them are caused by acute laryngitis, with sudden onset, with or without fever, with barking cough, which will improve significantly after nebulized inhalation such as budesonide is given. After the hoarseness disappears, it will be accompanied by a cough at a later stage, and antibiotics such as cefotaxime can be applied if necessary. 2. If the hoarseness is present since birth, attention should be paid to congenital developmental abnormalities of the vocal cords, congenital nodules, etc., and the baby should be taken to the quintuplegic department for laryngoscopy to clarify, and corresponding symptomatic treatment should be given according to the examination results.