Twenty days after cesarean section, it is clinically normal to have bloody discharge, because in the case of normal delivery, the bloody discharge will be completely cleaned up in about nine days. In a cesarean section, there is an incision in the lower part of the uterus, and there will be a small amount of bleeding during the healing process of the incision, so it will take a longer time for the bloody discharge to be cleaned up. It is important to observe whether the bloody discharge has a bad odor and whether it is fresh bleeding, if there is a bad odor or fresh bleeding, it is an abnormal phenomenon. It is recommended to go to the hospital for further examination to understand the healing of the uterine incision and to exclude the possibility of infection. If abnormalities are detected, prompt treatment should be given in the clinic. In addition, after cesarean section, if the bloody discharge is not clean, you should not eat stew made of wine, and you should not eat ginseng, deer antler, red dates and Colla Corii Asini.