Abdominal pregnancy is relatively rare in clinical practice,and can be divided into secondary abdominal pregnancy and primary abdominal pregnancy.The primary abdominal pregnancy is rarer than the secondary abdominal pregnancy.This paper reports a case of primary abdominal pregnancy with intraperitoneal hemorrhage.After an emergency laparoscopic exploration,it was found that the pregnancy tissue was implanted in the uterine sacral ligaments.The pregnancy tissue was removed under laparoscopy,and the level of β-human chorionic gonadotropin(β-hCG)reduced well after surgery.Clinical diagnosis of abdominal pregnancy is generally combined with the medical history,the level of β-hCG and gynecologic ultrasound,and can be combined with magnetic resonance imaging as a assisted method if necessary.It is worth noting that the diagnosis of ectopic pregnancy in this special site is difficult,and that abdominal pregnancy is often accompanied by intraperitoneal hemorrhage.The key method of definite diagnosis is laparoscopic exploration,and the key treatment of abdominal pregnancy is also mainly relied on surgical exploration,early detection and thorough removal of intra-abdominal pregnancy lesions to prevent the occurrence of secondary abdominal pregnancy.If necessary,low-dose methotrexate as a combined treatment can be added.To stop bleeding actively can prevent serious complications during the operation.