The infection of pathogenic bacteria after a cold involves the throat and vocal cords, resulting in congestion and edema in the throat, which leads to a sore throat. First of all, throat dumbness after a cold is mostly caused by hemolytic streptococcal infection, so it is especially important to use cephalosporin antibiotics for anti-infection and anti-cause treatment. Sore throat. Second, diet, pay attention to a light diet, prohibit spicy and stimulating food, otherwise it will aggravate the vocal cords, throat edema. Also pay attention to drink more water, at least 2500ml of water a day. You can also drink iced sugar snow pear soup to clear heat and moisten the lungs, stop cough and resolve phlegm, so that the throat and vocal cords are in a mild environment. In addition, try to talk less, if there is a significant cough can be appropriate to use some cough medicine to reduce the stimulation of the vocal cords. Pay attention to rest, do not stay up late, improve the immunity of the body, and enhance the ability to resist the invasion of external germs. Usually the symptoms can be relieved after a week of the above treatment. If the sore throat is still not relieved after a week, you need to consult a regular hospital to clarify whether there are other diseases.