“Doctor, I am 2 months pregnant and need an abortion.” Patient B said. “Please wait ……” I was giving another patient instructions on what to do after the IUD was placed. “Doctor, hurry up, hurry up! I have to pick up the baby soon” Patient B seems to be waiting impatiently. “Okay, may I ask on what date was your last menstrual period? Are you sure it’s an intrauterine pregnancy? ……” I quickly asked for a medical history and wrote out a series of requests for the most basic preoperative tests. Handing it to patient B, she took a look at the various lists and said, “Doctor, is it okay if I don’t get checked? I’m very healthy, I’ve given birth to 2 children, and I’m very experienced. I had an abortion at a clinic a few months ago, nothing was checked at that time, it went quite well.” I smiled and shook my head, “That’s the most basic checkup, you can’t skip it, the checkup is to ensure your safety.” “Forget it, just fool people! I’ll still go to that clinic to do it!” She said, stepping on her high heels and walking away with a thump. This situation is also common in family planning clinics, and we are not surprised. A few days later, in the family planning clinic, I met Patient B again. This time, as soon as she saw me, she said, “Why do I still have nausea and vomiting after this abortion? Could it be that the clinic doctor didn’t do it for me?” I didn’t give her a definite answer and suggested her to have a repeat ultrasound of her uterine adnexa. The ultrasound image showed: 1. The uterus was enlarged in longitudinal section, with the uterine fundus dilated towards the left uterine horn, no gestational sac was seen in the uterine cavity, and the meconium was visible. 2, transverse section shows eccentric circle, that is, the fetal sac or mass is biased on one side of the uterine cavity, not connected with the uterine cavity, and the muscle wall is incomplete. 3. Color Doppler showed interstitial germs and cardiovascular pulsations in the fetal sac, and peripheral colored blood flow signals were seen in the ring. The diagnosis of A B was twofold: 1) left tubal mesenchymal pregnancy, 2) left uterine horn pregnancy, and 2) left uterine horn pregnancy. The fallopian tubes are located on both sides of the uterus, protruding from the uterine horns, connected to the uterine horns on the inner side, and free at the outer end, and are long, slender, curved, and muscular tubes, with lengths of 8-14 cm. The fallopian tubes are divided into four sections from the inside to the outside, namely the mesenchymal section, the isthmus, the jugal section, and the umbrella section. The interstitial part is the part that passes into the uterine wall, narrow and short, 1cm long, surrounded by uterine muscle tissue. When the development of the fertilized egg is delayed, or the fallopian tube is inflamed, the pregnant egg fails to enter the door of the uterine cavity and develops here, forming an interstitial pregnancy. Tubal uterine interstitial pregnancy occurs in a part of the fallopian tube and accounts for 2-4% of all ectopic pregnancies. Comparison of tubal uterine stromal pregnancy and other ectopic pregnancy, its pathology, clinical manifestations and diagnosis and treatment are significantly different, once the rupture occurs, the bleeding is raging, which can lead to hemorrhagic shock or even too late to rescue, etc., and the morbidity and mortality rate is several times higher than that of other ectopic pregnancies. Therefore, early and correct diagnosis of interstitial pregnancy is particularly important. At this point, A B’s tubal pregnancy is like a bomb that will explode at any time, so it is urgent to operate before it explodes. Before rupture, there may not be any discomfort, but once ruptured, the consequences are unimaginable. We explained the situation to Patient B and her family and recommended immediate hospitalization for surgery. This time, patient B seems to be a different person compared with a few days ago, compliance is very good, determined to cooperate. Everyone started a race against time. After quickly completing the relevant preoperative examinations, laparoscopic resection of left tubal mesocolic pregnancy was performed. Intraoperative exploration showed that the left uterine horn was obviously dilated, outside the round ligament, and the interstitial part of the fallopian tube was enlarged by about 5 centimeters, with a purplish-blue appearance and angry blood vessels. The diagnosis of left tubal interstitial pregnancy was confirmed. During exploration, the blood vessels at the bulge suddenly ruptured and the gestational sac popped out. Immediately transferred to open laparotomy, within a few minutes, abdominal bleeding and blood clots about 2000 ml. After opening two-way intravenous access, blood and fluid transfusion, and performing left salpingectomy with left uterine horn myotomy repair, the patient, A.B., was turned to safety! The etiology of ectopic pregnancy, including: 1. pelvic infection; 2. uterine manipulation; 3. intrauterine device; 4. sex hormone abnormality; 5. history of uterine surgery; 6. uterine malformation. The following are suggestions for all women. 1. Choose the best time physically and mentally to conceive. 2.If there is no requirement for childbearing, please take good contraceptive measures. 3, abortion is only a contraceptive failure of a remedy, the need for surgery need regular hospitals, preoperative examination is essential. 4.Actively treat inflammation of the reproductive system. 5.Pay attention to menstruation, labor and puerperium hygiene to prevent infections of the reproductive system.