Whether placental adhesions are dangerous when a woman has a baby depends on the severity of the adhesions and cannot be generalized. Placental adhesions are the adhesion of the placental villi to the muscular surface of the uterus and are a type of placental implantation. The main manifestation of placenta adhesions is that the placenta does not detach itself after more than 30 minutes after delivery, with or without vaginal bleeding, and the doctor has difficulty in removing the placenta with his bare hands, or the placenta is found to be tightly adhered. In most cases of mild placental adhesions, there is usually no significant risk and manual placental abruption can be performed under close observation. If the adhesions are more severe or large, they may cause severe postpartum hemorrhage, shock or even death, which is more dangerous. In addition, this type of condition may require removal of the uterus if the detachment is not clean to avoid hemorrhage. Pregnant women are advised to pay attention to personal hygiene, develop good living habits and avoid repeated uterine operations.