Bright red colored discharge 30 days after cesarean section is usually abnormal and may be due to conditions such as poor healing of the uterine incision, incomplete uterine regrowth, and infection of the uterine cavity. Dew is blood, necrotic meconium and other tissues that are discharged with the uterine meconium after delivery. Usually, it is bloody for 3~4 days after delivery, plasma for about 10 days after delivery, and white for about 3 weeks after delivery. Therefore, 30 days after cesarean section with bright red colored discharge is usually abnormal. If the uterine incision heals poorly after cesarean section, it may be manifested as a persistent flow of fresh blood from the vagina. When the uterus is not fully restored due to residual placenta membranes, meconium, etc., it may lead to prolonged duration of bloody discharge. If puerperal infection occurs after delivery, it can cause uterine cavity infection, endometritis, etc., which can also lead to prolonged discharge. If you still have bright red discharge after 30 days of cesarean section, it is recommended to consult a doctor in time for diagnosis and treatment by a professional doctor.