Whether or not it’s good to cover up a cold or fever depends largely on the specific condition. Colds are due to infection by viruses, bacteria and other pathogens, the inflammatory response of the mucous membrane of the upper respiratory tract. The body’s immune response is relatively strong body temperature will rise, the body sweating can be appropriate to cover the body to continue to sweat, can promote the sweat discharge, take away the body’s heat to achieve the purpose of lowering the body temperature. If the body temperature continues to rise, reaching 39 ℃ or even more than 40 ℃, the skin is dry without a little sweat, is not able to cover the sweat, otherwise it will aggravate the temperature continues to rise, the condition is not favorable, should pay attention to drink more warm boiled water, warm juice, and appropriate use of antipyretic agents, such as ibuprofen, acetaminophen, etc., to promote sweating in the body, and can cool down the temperature.