The reason for not getting rid of the bad dew after cesarean section is puerperal infection, poor uterine recovery, and poor healing of the incision after the operation. 1. Puerperal infection: if women do not pay attention to hygiene after cesarean section, disease-causing microorganisms will enter the reproductive tract and cause infections. In addition, after cesarean section, the resistance of the human body will be reduced, and there are certain germs colonized in the reproductive tract, which will multiply and cause infections, which will be mainly manifested as fever, pain and abnormal discharge. 2. Poor uterine recovery: If the placental area is too large, or the physical condition is not good, it will affect the normal recovery of the uterus, and there will be poor uterine recovery, which will be manifested in the excessive amount and long duration of bad dew. 3. Poor healing of postoperative incision: After cesarean section, if the uterine incision heals poorly, the sutures will dissolve and fall off, which will lead to the reopening of the blood sinuses, and there will be a lot of vaginal bleeding. There may be other reasons why the discharge from the cesarean section is not clean, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.