The symptoms of inability to speak in the throat are often caused by acute and chronic inflammatory factors in the larynx, and possibly other factors, as follows: 1, acute and chronic inflammation: patients may suffer from cold and flu, or suffer from respiratory bacterial or viral infections, causing acute edema of the mucous membrane of the vocal cords in the larynx, which can easily cause obvious hoarseness, or even complete loss of voice. 2, other factors: some patients may also have long-term excessive voice, even shouting, and long-term smoking, drinking, eating spicy food, exposure to air pollution, and other factors, it is easy to cause chronic congestion, swelling of the vocal fold mucosa, may further appear vocal fold nodules, vocal fold polyps, and other benign and malignant tumor growths of the vocal fold, if necessary If necessary, further surgical treatment may be required.