A child’s voice is always mute, which may be related to various factors such as pharyngitis, vocal cord nodules, tonsillitis and so on. 1. Pharyngitis, after a child develops pharyngitis, the increase of inflammatory secretions in the throat may lead to congestion in the throat and oppression of the vocal cords, so this symptom may occur. 2. Vocal cord nodules, some children with vocal cord nodules, nodules compression of the vocal cords may lead to abnormal function of the vocal cords, the emergence of this symptom. 3. Tonsillitis, some children have tonsillitis after tonsillitis tonsillar inflammatory secretions increase, may stimulate the vocal folds, this situation. The child is always mute, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.