The baby’s hoarse voice may be related to dry air, low water intake or colds, laryngitis, vocal polyps, vocal nodules and other causes. If the baby’s voice hoarseness is persistent recurrence, and the symptoms gradually aggravated, need to go to the hospital pediatrics, identify the cause of the disease and the cause of treatment. First, physiological reasons: if the baby is in the environment is too dry, coupled with low water intake, baby crying and other reasons, can cause mucosal congestion, affecting the normal pronunciation of the vocal cords, thus hoarse voice. The symptoms can be alleviated by improving the way of life, dietary habits, such as placing a humidifier at home, pay attention to drink more water, eat water-rich fruits, pay attention to soothe the emotions when crying, avoid excessive use of the voice. Pathological causes: 1, cold: bacteria, pathogens invasion caused by upper respiratory tract infection, nasopharyngeal mucosal stimulation by inflammation can appear pharyngeal discomfort, sore throat, causing hoarse voice. Can give appropriate throat tablets or sprays to ease the discomfort of the throat, and pay attention to drink more water, light diet, when the infection is serious, can be applied under the guidance of the doctor penicillin and other drugs for anti-infective treatment; 2, laryngitis: the baby laryngeal cavity is narrow, the larynx submucosal tissues are flaccid, the mucous membrane is rich in lymphatic vessels, inflammation is very easy to generate oedema and block the laryngeal cavity, which leads to hoarse voice. Under the guidance of the doctor can be applied budesonide nebulizer inhalation, or the application of dexamethasone to relieve laryngeal edema, amoxicillin and other drugs for anti-inflammatory treatment to alleviate the symptoms; 3, vocal polyps: belonging to the benign hyperplastic lesions of the vocal folds, manifested as hoarseness, the serious cases can lead to loss of voice, most of the need for surgical resection treatment to relieve the symptoms; 4, vocal cord nodules: usually caused by excessive use of the voice, which can be manifested as intermittent hoarseness, generally through sufficient rest and rest, and then the voice of the larynx. Hoarseness, generally through sufficient rest, small nodules can gradually subside, the larger vocal nodules need surgical resection.