Children can be covered during fever, because covering can effectively avoid the stimulation of cold air, can avoid aggravating the disease, but try not to cover too thick, because the fever needs to sweat, in order to help the recovery of the disease. If the blanket is too thick, which makes sweating difficult, it is also likely to affect the recovery of the disease, because during the fever the baby is likely to take drugs such as antipyretic and analgesic, and such drugs are likely to aggravate the sweating. If the blanket is soaked due to excessive sweating, it should be changed in a timely manner to avoid aggravation of the disease due to stimulation by humid air. Because children have poor self-discipline, they are likely to lift off the covers if they are sweating or hot when they are covered. If this happens frequently, it is likely to aggravate the cold, so consider sleeping in pajamas, which can effectively prevent this from happening.