The most common causes of hoarseness in children are acute laryngitis, excessive use of voice, and other rare causes such as vocal cord organisms. 1. Acute laryngitis: when a child has an acute upper respiratory tract infection, acute laryngitis may be complicated by barking cough, hoarseness, pharyngeal discomfort, or even breathlessness, dyspnea, easily accompanied by fever, this time should be a timely emergency room, to be hydrocortisone nebulizer inhalation, tracheotomy is needed to save lives. 2. Excessive use of the voice: children are prone to shouting and yelling, which in turn causes damage to the vocal cords and hoarseness, which will soon recover after rest. 3. Vocal cord organisms: common vocal nodules, vocal polyps, vocal cord papilloma, etc., can cause hoarseness for a long time, should be timely ENT consultation, clear cause, if necessary, can be surgical treatment. In short, when you find your child hoarse, you should consult the ENT in time to identify the cause and take targeted treatment.