The placenta may adhere in a normal delivery of the third child in vitro and needs to be handled carefully after delivery. IVF refers to in vitro fertilization-embryo transfer technique, which should be operated by professional doctors. Due to the process of egg retrieval during the operation, the risk of pelvic inflammatory disease will be increased when eggs are retrieved for several times, so the placenta may be adhered during the delivery of the third child in IVF, when the placenta cannot be peeled off by itself after more than 30 minutes after the delivery of the fetus in a normal delivery, it may be adhered, and it is necessary to perform the procedure of manual removal of the placenta. When removing the placenta during labor, it is necessary to pay attention to gentle movements, not violent peeling, if necessary, can be guided by ultrasound operation, and after the removal of the placenta, it is also necessary to check the integrity of the placenta, so as to avoid placenta retention. After delivery, drugs such as oxytocin should be given to promote uterine contraction to reduce the risk of postpartum hemorrhage and late postpartum hemorrhage, and the uterus should be rechecked with ultrasound as instructed by the doctor to check the uterine recovery status. During pregnancy, you should pay attention to rest, relax, avoid tension and anxiety, and go to the hospital in time if you have any discomfort, so that the doctor can make a clear diagnosis and cooperate with the doctor to treat the symptoms.