It is incorrect to sweat under the covers when you have a cold. A range of clinical symptoms can occur during a cold, most of which are characterized by fever, runny nose, nasal congestion, cough and other symptoms. The body’s heat production increases during fever, and in this state it is not recommended to cover the sweat. Covering the sweat will make it difficult for the body’s heat to be discharged from the body, hindering the evaporation of sweat, which is not only ineffective, but will aggravate the fever. If you have a fever during a cold, you can use physical cooling methods such as alcohol rubs to reduce the fever. If accompanied by a lot of sweating symptoms, the sweat should be dried in a timely manner, and at the same time drink more warm water. If the body temperature exceeds 38.5℃, ibuprofen, acetaminophen and other medications can be given as prescribed by the doctor to relieve fever symptoms. After the cold symptoms of physical discomfort, it is recommended to seek medical attention in a timely manner, can not be blindly used to cover the blanket to cover the sweat and other wrong way to treat, so as not to delay the condition.