There is no fixed duration of contractions for second-trimester cesarean delivery, and they usually last for 2 to 3 days and disappear naturally. After second-trimester cesarean section, there will be paroxysmal pain in the lower abdomen caused by uterine contraction, i.e. postpartum contraction pain. It usually appears 1~2 days after the operation and disappears in 2~3 days, and is mostly seen in menstruating women. Breastfeeding will reflexively cause an increase in the secretion of oxytocin, which will also aggravate the contraction pain, and do not require special medication. If the pain is unbearable, you can take ibuprofen and other painkillers orally under the guidance of the doctor. After cesarean section, you should also pay attention to get out of bed as soon as possible to promote the recovery of gastrointestinal function and reduce the occurrence of thrombotic disease. After the operation, you need to increase diet and nutrition to promote wound healing and physical recovery. Pay attention to personal hygiene, keep the vulva clean and dry, change and wash the underwear, prohibit tub baths and sexual intercourse for 6 weeks, and pay attention to the observation of contractions and vaginal bleeding.