Patients can not make a sound in the throat condition, the reasons are as follows: 1, there is often a more serious degree of acute laryngitis, the vocal cord mucosa will often appear to a greater degree of congestion and swelling or edema state, will lead to poor closure of the vocal cords, it is easy to appear obvious hoarseness, or even complete loss of voice, the occurrence of this situation may be and the patient’s recent excessive voice speech, or even shouting This condition may be related to the patient’s recent excessive use of voice or even shouting, or may be related to cold or bacterial or viral infections. If the patient has a long history of hoarseness, further laryngoscopy is required. 2. Some patients may have vocal fold polyps, vocal fold cysts, or even malignant tumors. 3.