The cause of a muffled voice may be due to excessive use of the voice and pathological factors. Excessive use of the voice can be treated by dietary modifications, while pathological factors can be treated by medication and surgery. 1. If your voice is muffled due to overuse of the voice, you can treat it with dietary modifications. In terms of diet, you can eat some light food, eat more vegetables and fruits, drink more water, eat more watermelon, snow pear, grapes, these fruits are more moist and have the effect of moisturizing the throat, you should avoid eating spicy, stimulating food, avoid alcohol and tobacco. 2. If the voice is mute due to pathological factors, it can be treated with medication. If it is related to bacteria and other pathogenic microbial infections, antibiotics, such as penicillin, should be used under the guidance of the doctor; acute pharyngolaryngitis caused by a mute voice, if accompanied by congestion of the mucous membranes, it should be promptly nebulized under the guidance of the doctor. If the tumor is caused by the person, need surgery and other comprehensive treatment. There are many other reasons for the mute voice, the patient should consult a doctor in time, improve the relevant examination, standardized treatment.