Anterior placenta is the placenta attached to the lower segment of the uterus, its lower edge reaches or covers the inner cervical opening and is positioned below the fetal previa. Depending on the relationship between the placenta and the inner cervical opening, it is classified as low, marginal, partial and complete placenta praevia, and the chance and severity of antepartum and postpartum bleeding varies with different types of placenta praevia. The classification of placenta praevia is determined by the results of the last examination before clinical management is required. In recent years, placenta praevia with a history of cesarean delivery and placenta attached to the lower part of the anterior uterine wall at the original cesarean scar is called aggressive placenta praevia. The risk of massive bleeding and hysterectomy during reoperation for aggressive placenta praevia is significantly increased and should be treated in a hospital with life-saving conditions. 1.Expectant therapy: The purpose is to prolong the pregnancy as long as possible and improve the survival rate of the fetus under the premise of protecting the safety of mother and child. It is suitable for pregnant women who are <36 weeks pregnant, with a viable fetus, good general condition, low vaginal bleeding and no need for emergency delivery. It is recommended to be treated in a medical institution with maternal and child resuscitation capabilities. Once there is vaginal bleeding, immediately hospitalize the patient, strengthen monitoring of the condition of the mother and child, and terminate the pregnancy by cesarean section if necessary. (2) Termination of pregnancy: (1) Indications: heavy bleeding or even shock, in order to save the life of the pregnant woman; obstetric indications such as fetal distress, when the fetus is viable, emergency surgery is feasible; placenta praevia diagnosed after delivery, with more bleeding and estimated not to deliver in a short time; placenta praevia without clinical symptoms decides the timing of delivery according to the type, combined with placental implantation can be terminated by elective cesarean section at 36 weeks of gestation The pregnancy can be terminated by elective cesarean section at 37 weeks of gestation for complete placenta praevia, at 38 weeks for borderline placenta praevia, and at the right time for partial placenta praevia according to the placenta covering the endocervix. (2) Surgical management: actively correct anemia, prevent infection, prepare blood before surgery, and be prepared to deal with postpartum hemorrhage and resuscitate the newborn. (3) Choice of delivery method: vaginal delivery is only suitable for those with marginal placenta praevia, low placenta, occipital previa, little vaginal bleeding and estimated to end the delivery in a short time, and vaginal trial of delivery can be performed under close monitoring in the conditioned institutions with sufficient blood supply. In conclusion, the principles of treatment for placenta praevia are suppression of contractions, correction of anemia, prevention of infection and termination of pregnancy at the right time. The treatment is based on the amount of vaginal bleeding, gestational week, delivery, fetal position, the presence of shock, whether labor is imminent, whether the fetus is alive and the type of placenta praevia.