Maternity sweating is mainly due to the increase in blood volume during pregnancy, which has to be eliminated by means of puerperal sweating after delivery. During pregnancy, the pregnant woman’s blood volume will undergo an increased change, about 35% increase, of which the plasma enhancement is more obvious. When the pregnancy after seven weeks, the pregnant woman’s blood volume began to show an increase in the performance of the most important component is water, the excess water in the postpartum body needs to be excreted through the skin sweating, urination and other ways. Maternity skin excretion function is more exuberant after childbirth, lactation lactation caused by the body’s nutrient consumption, so that the body metabolism to accelerate, can also cause increased sweating performance. Maternal sweating is generally normal, should maintain normal ventilation cooling, try not to cover sweat.