Anatomically, any abnormality that can cause any abnormality in vocal fold movement, vocal fold tension and vocal fold structure can cause hoarseness. The causes of hoarseness in children can be broadly classified into the following three types: 1. congenital diseases: such as congenital laryngeal prolapse and congenital vocal fold paralysis, etc. These congenital diseases usually cause symptoms of hoarseness soon after birth. 2, excessive use of voice: children shouting and crying for a long time is one of the main causes of hoarseness, especially nowadays some little princesses and emperors who are spoiled by the whole family, cry loudly and force adults to compromise if they are not satisfied, and some children do not pay attention to the protection of the voice when learning to sing, and force the vocal cords to soar up when the high notes do not go up, which can cause friction due to strong airflow impact on the vocal cords. Some children, after hoarseness, do not know how to reduce speaking, so that the vocal folds temporarily rest; instead, because of hoarseness and more forceful speaking, over time, easy to cause excessive tension around the laryngeal chambers, resulting in relaxation of the laryngeal chambers muscle, long-term excessive use of voice, so that the vocal folds vibration super strong, long-term such bad stimulation of the vocal folds, so that the edge of the vocal folds in the front and middle 1/3 of the traumatic inflammatory reaction, manifested as vascular hyperplasia, mucous membrane This vicious cycle makes the voice more hoarse; 3, children’s voices are hoarse for a long time to be alert to whether it is caused by chronic laryngitis. The main reason for chronic laryngitis is repeated respiratory infections, or incomplete treatment of acute laryngitis episodes and transformation into chronic laryngitis, prolonged nasal congestion, runny nose, open mouth breathing, and inflammatory secretions stimulate the laryngeal mucosa, etc. It is easy to make the vocal cords congested and edematous, and over time, it is easy to cause vocal cord hypertrophy or vocal cord nodules, and even develop into vocal cord polyps, resulting in hoarseness. The human voice is the most sensitive barometer of people’s emotional state, and any impact or excitement of the mind directly affects the voice. In order to maintain a good physiological state of the voice, so as not to damage the vocal cords and produce polyps, parents should educate their children from childhood to develop calm and relaxed habits of life, not to be angry when things go wrong, not to call loudly, to achieve a controlled voice, which is also necessary to educate children from childhood to develop civilization. For patients with respiratory tract infections and acute laryngitis, if hoarseness occurs and is accompanied by breathing difficulties and a “barking” cough, they should go to the hospital as soon as possible to seek medical attention and do not delay treatment. In addition, children should be careful to eat less salty and spicy food, especially during hoarseness, and spicy food should be prohibited. During the period of hoarseness, if you pay attention to adjusting the volume and tone, the discomfort of vocalization will soon pass.