Cesarean section is the common name for caesarean section, after cesarean section, it is mainly considered to be related to poor healing of uterine incision, endometritis, endocrine disorders and so on. 1. Poor healing of uterine incision: During cesarean section, the uterus will be cut open. If the uterine incision is not completely healed at the later stage, a uterine scar diverticulum will be formed, which will lead to the symptom of irregular menstruation. 2. Endometritis: If endometritis occurs after cesarean section, it can cause irregular menstruation, and may be accompanied by fever, abdominal pain, and smelly secretions. 3. Endocrine disorders: If endocrine disorders occur after cesarean delivery, women may have irregular menstruation. If the symptoms of irregular menstruation occur after cesarean section, you need to consult a doctor as soon as possible, complete the examination, clarify the cause of the disease, and actively deal with it.