The cost of microsurgical tubal anastomosis surgery is about$1200. Before the surgery, we need to improve the related examinations: i. Blood routine, blood type, coagulation function, urine and stool routine, vaginal discharge examination, liver and kidney function examination, electrolytes, fasting blood sugar, hepatitis B virus surface antigen, syphilis spirochete antibody, hepatitis C antibody, HIV, etc. Second, electrocardiogram, B-type ultrasound, chest X-ray examination. The surgery is usually chosen to be performed between clean menstrual periods. The success of pregnancy after tubal revascularization is related to the age, type and location of the ligation and the final length of the tubal after revascularization. Younger and previously ligated patients with titanium clips have better postoperative results. The pregnancy rate is 45%-82% with microsurgery by caesarean section and 25%-53% with laparoscopic tubal anastomosis, and the risk of ectopic pregnancy after revascularization is 1%-7%.