After giving birth to a baby, the duration of bad dew is usually 42 days, but the duration of red dew should not be more than 14 days, if there is still red dew for more than 14 days, you must go to the hospital as soon as possible to check and find out the cause, which may be the placenta, the residual membranes, or the incision of the cesarean section is not healing well, and of course, it may be due to the blood stagnation caused by the bad rest and improper diet. It is also important to go to the hospital as soon as possible to deal with unclean discharge. If the bad dew is red, it means that there is still blood. With blood in the vagina for a long time, in the middle of an alkaline environment, it is easy to breed bacteria under the moisturizing of blood, which can cause upward infection and lead to puerperal infection, which is a serious postpartum complication. Women’s discharge refers to the postpartum with the shedding of uterine meconium, containing blood, necrotic meconium and other tissues discharged through the vagina, the discharge is generally divided into three kinds, as follows: 1, bloody discharge: generally in the postpartum 3-4 days, the amount of more, because it contains a large amount of blood, but also contains necrotic meconium and a small amount of fetal membranes, the color is darker, is bright red. 2, plasmacytosis: contains a large amount of plasma, light red, plasmacytosis generally lasts for a period of time, and is not a serious complication, but it is a serious problem. The color is light red, and the plasma discharge usually lasts for about 10 days, which means that the plasma discharge must be gone in 14 days after delivery.3. White discharge: the color is whiter and named after it, and it also contains a small amount of necrotic membranes, but there are no red blood cells, and the white discharge usually lasts for three weeks, which means that the discharge is formally discharged on the 42nd day after delivery.