Children’s hoarseness is mostly considered to be caused by improper use of voice, laryngitis, upper respiratory tract infection, vocal cord nodules, vocal cord polyps and other causes, and need to go to the hospital for timely examination. Common causes and related recommendations are as follows: 1. Improper use of voice: school-age children like to shout, read aloud and sing, but do not master the correct vocal method, and prolonged use of voice can lead to hoarseness. It is recommended to control the voice size appropriately, reduce the vocal time, usually drink more water, avoid eating cold, irritating food after a long time of vocalization, and specialize in learning vocal methods if possible; 2. Laryngitis: chronic laryngitis is mostly manifested as hoarseness, increased laryngeal secretions, and laryngeal discomfort. The laryngoscopy needs to be improved, active treatment of the nasal cavity, sinuses, oral cavity, pharynx lesions, can be prescribed to local tablets, nebulized inhalation to relieve laryngeal discomfort, usually need to avoid long-term excessive use of voice, acute laryngitis starts quickly, hoarseness, fever can occur in a short period of time after the airway obstruction, should promptly seek medical attention, the lack of oxygen to give oxygen, while the application of penicillin, cephalosporins, local nebulized inhalation hormones In addition to hoarseness, children also have symptoms such as nasal congestion, sneezing, dry cough and sore throat. Treatment is mainly based on symptomatic treatment, oral acetaminophen for high fever, antiviral drugs such as triazolyl nucleoside for viral infections, and antibiotics such as penicillin and cephalosporin for bacterial infections; 4. Vocal cord disease: If hoarseness occurs for a long time, you need to be alert to the possibility of vocal cord nodules, vocal cord polyps, and vocal cord tumors. Improve fiber laryngoscopy, if diagnosed as vocal cord nodules, conservative treatment for 1-3 months, follow medical advice to physiotherapy and nebulizer inhalation treatment, also can use acid suppressing drugs, if necessary, need surgery, if diagnosed as vocal cord polyps, vocal cord tumors, surgery can be performed.