A muffled voice after a cold is actually the result of a cold that has not yet fully healed, but other symptoms are relieved first and the throat symptoms have not yet been relieved. Usually it will clear up in a few days. If the situation worsens or does not heal over time, you need to seek medical attention and consider throat diseases. Colds are caused by viruses that attack the upper respiratory tract, and at this time, in addition to the common symptoms of nasal congestion, runny nose, fever, etc., the pharynx will also be invaded by viruses, resulting in coughing, dryness of the pharynx, throat itching or burning sensation and other uncomfortable symptoms. Different viruses, different body types, onset times, etc. will have different symptoms. When the cold is well, usually the nasal symptoms are relieved first, at this time the pharynx undergoes the stimulation of inflammation and needs some time to repair, so it will take some time before it can heal itself. During this time, it is important to avoid excessive use of the pharynx, such as loud, prolonged talking and singing. Do not smoke, drink alcohol, do not eat spicy and stimulating food, can contain mints, watermelon cream, etc. to ease the symptoms of pharyngeal discomfort.