For fever caused by a virus of upper respiratory tract infection, usually drink some hot water. For wind chill, which is cold in nature, use ginger tea, etc., and a little sweating may reduce the fever. For severe respiratory tract infections, self-limiting cold and fever, it takes a week for the fever to subside. However, clinically with some oral medicine, for example, anti-viral oral solution, Chinese medicine, maybe the fever will only last for two or three days, or even one day, so there is no need to be too anxious when a viral cold appears, and symptomatic treatment can relieve it. Usually, when you have a viral cold, you should pay attention to keeping warm, eat a balanced diet, eat foods with high protein and vitamins, such as eggs, milk, etc. You should also pay attention to a low-fat, low-salt diet, do not eat spicy, greasy and stimulating foods, such as barbecue, hot pot, etc., and drink more water. Life should ensure sufficient sleep, more rest, ensure indoor air circulation, and develop good habits of exercise to enhance resistance, thus promoting recovery from the disease.