A muffled voice should mean hoarseness, and hoarseness does not indicate that a cold is almost over, hoarseness is just one of the symptoms of a cold. Colds are acute upper respiratory illnesses caused by viral infections. It starts quickly and is mainly characterized by nasal symptoms, such as nasal congestion, runny nose, etc. It can also be characterized by a dry throat, itchy throat and so on. Usually the nasal mucus becomes thicker after 2-3 days, and may be accompanied by sore throat, headache, hoarseness and other symptoms. Generally 5-7 days can be cured, accompanied by complications can lead to a prolonged course of the disease. Therefore, hoarseness does not indicate that the cold is almost over. If the symptoms of cold and flu are mild, no medication is needed, drink plenty of water, pay attention to rest, reduce or avoid eating greasy, cold, spicy and irritating food. If symptoms are severe, cold medicines such as cotrimoxazole can be used to treat the symptoms. Hoarseness can also be caused by other diseases, if the patient does not relieve or aggravate the symptoms, it is recommended to consult a doctor in a timely manner, and follow the doctor’s instructions for medication.