It takes about 1 month for the dew to clear after a cesarean section. After a cesarean section, there are three types of malaria, depending on the color, contents and duration. The first one is bloody nightmare, which is red in color and contains a lot of blood and lasts about 3 days, then the amount of bleeding gradually decreases, the color gradually lightens to pink, and the contents increase in plasma, which gradually turns into plasma nightmare. Plasma nightmare lasts for about 7 days, then the color becomes lighter and turns white, and the contents are mainly meconium and bacteria, with a lot of mucus, called white nightmare, which takes about 14 days to drain. If the uterus is not contracting well after the cesarean section or if there is residual fetal membranes, it is easy to prolong the duration of the malformation.