There are many reasons for sweating in bed with a cold: first, it may be that the fever, headache, increased body temperature, etc. stimulate the body temperature center after the cold, resulting in vasodilation, skin sweating, heat dissipation accelerated, or it may be that the body is weaker after the cold, the anti-cold drugs taken have a sweating effect, and sweating will be more when sleeping under the covers. Secondly, the cold has not been healed for a long time, the body consumes a lot leading to a particularly weak body, the symptoms of false sweating. Third, sweating after a cold and the environment, such as room ventilation, stifling heat, resulting in sweating in bed, winter heating when the house is hot, the quilt cover thicker will sweat, usually to keep the room temperature appropriate, often open the window ventilation, after the cold to go to the hospital for treatment, so as to avoid serious conditions.