The symptoms of hoarseness include excessive use of voice, acute pharyngolaryngitis, laryngeal cancer, and congenital hypoplasia of sound-forming organs, etc. It is necessary to take medication or surgery to treat the cause of the disease. 1. Excessive use of voice: Physiological factors such as frequent use of voice for a long period of time, talking loudly, or drinking too little water lead to dryness and dehydration of the mucous membrane of the throat, and the above symptoms may occur in severe cases. It is necessary to pay attention to the rational use of voice, avoid long time loud talking, and drink appropriate amount of water. 2. Acute pharyngitis: Bacteria, viruses and other pathogenic microorganisms infect the mucous membrane of the pharynx and cause localized oozing, edema, congestion and other inflammatory reactions, leading to vocal cord vibration disorders and the voice can not speak. Penicillin, ceftriaxone and other antibacterial drugs or ganciclovir, ribavirin and other antiviral drugs can be applied. 3. Laryngeal cancer: The symptom occurs because of the dysfunction of vocal cords and other articulating tissues due to massive proliferation of laryngeal tissues after cancerous transformation. It needs to be treated by surgery and radiotherapy. 4. Congenital hypoplasia of vocal organs: in the case of congenital cleft lip, congenital incomplete palatopharyngeal closure, congenital laryngeal recurrent nerve abnormality and other diseases, vocal cords and other articulatory organs will develop abnormally and this symptom will appear. Surgery is needed to correct the deformity of the vocal organs. The above medications should be used under the supervision of a doctor, avoiding self-medication.