Why do you have cold sweats when you have a cold? You need to discuss this issue from both Chinese medicine and Western medicine. Usually, if we look at it from the perspective of Chinese medicine, cold sweat is a manifestation of excessive deficiency of the body constitution, which causes cold and dampness to enter the body due to kidney deficiency, qi deficiency and blood deficiency, and the clinical symptoms of cold extremities and cold sweat appear at the same time as a cold. If from the perspective of Western medicine identification, the reason for cold sweat when catching a cold is the invasion of virus into the body, the virus invading the body will produce immune complexes, antigens and antibodies, which will expel the virus from the body, then the body will have a transient fever, which quickly decreases again, and the clinical symptoms of cold sweat will appear. In addition, if the body is too weak when the rehydration is not sufficient or the body sweats and sweats too much and fails to replace the excess water in time, the clinical symptoms of excessive cold sweating will also occur.