Placental abruption fetal hypoxia may lead to fetal asphyxiation death, induce brain diseases and so on. If the lack of oxygen of placenta previa fetus is serious, the fetus may die of asphyxiation; if the lack of oxygen is too long, it may cause abnormalities in the fetal brain, inducing some brain diseases, such as cerebral palsy and so on. Therefore, when placenta previa occurs, it is necessary to actively treat the symptoms. If abnormal fetal heartbeat is found during the labor and delivery examination, it means that the fetus has hypoxia and can be treated by oxygenation to preserve the fetus. If placenta previa is accompanied by heavy bleeding, the delivery must be terminated as soon as possible, otherwise the hemorrhage will cause hemorrhagic shock, and the life of both the mother and the fetus will be in danger. Placental abruption with fetal hypoxia should be treated early under the guidance of obstetricians and gynecologists to avoid delaying the condition and leading to serious consequences.