Diseases that tend to complicate placental abruption are maternal diseases such as hemorrhagic shock, disseminated intravascular coagulation, acute renal failure, and amniotic fluid embolism. There are also fetal and neonatal disorders, such as intrauterine growth restriction, fetal intrauterine growth restriction, neonatal asphyxia, and so on. 1. Maternal complications: Placental abruption can easily lead to bleeding, and hemorrhagic shock will occur if there is too much bleeding, and there is also the possibility of diffuse intravascular coagulation, when the bleeding is difficult to correct, which in turn leads to multiple organ failure. Renal ischemia can also lead to acute renal failure. If the amniotic fluid enters the circulation through the placental abruption surface, amniotic fluid embolism may also occur. 2. Fetal and neonatal complications: Due to placental abruption, the fetus cannot obtain sufficient nutrition and fetal growth restriction may occur. If the bleeding is excessive, the fetus will be deprived of oxygen in the uterus, and fetal death will occur in the uterus. Even if the fetus is born at this time, the newborn may suffer complications such as asphyxia. Placental abruption is a serious complication of pregnancy and should be treated promptly once detected.