Cold sweating during menstruation may be caused by water retention during pregnancy. In order to support the development of the fetus during pregnancy, the body will leave a large amount of water and sodium inside, and after the baby is born, this water will be discharged through the skin in the postnatal period of 2-3 weeks, and naturally sweating will increase, which is a normal phenomenon. In the postpartum will drink more water, hot soup, hot porridge, is also one of the causes of cold sweat, this phenomenon is more obvious in the postpartum 1-3 days, after 1 week will slowly improve. Women in the monthly period if the cold sweat, must pay attention to can eat more easily digested and absorbed food, drink appropriate water, do not eat too much oil, high calorie soup.