Normally, the puerperium is within 42 days after delivery. Most of the nightmares will be completely cleared within 20-30 days after delivery. If there is more than menstrual bleeding, or if the bleeding is prolonged and smelly, it is often necessary to consider poor uterine regeneration. Also, the most common cause of incomplete postpartum dew is often related to residual placenta, fetal membranes, or partial meconium not being expelled. Once this happens, it is recommended to review the pelvic ultrasound to see how the uterus is recovering. If the placenta and membranes remain, postpartum evacuation is required. During the postpartum puerperium, due to breastfeeding, the uterus is softer and the risk of surgery is higher, so it is recommended to go to a regular hospital for treatment.