When the water treatment fails, it mostly means that the patient’s condition is complicated, and then the following methods can be resorted to: laparoscopy, intervention and open surgery. The exact choice depends on the tubal obstruction. When the tubes are blocked in the mesosalpinx, intervention is suitable. Interventional therapy, known as X-ray tubal insertion, involves the insertion of a catheter with a guide wire into the fallopian tube under radiologic guidance, followed by the injection of a contrast medium and then a therapeutic drug. Generally, it is effective in cases where the obstruction is narrow, but not effective if the obstruction is large. If the umbilical end of the fallopian tube is blocked, or there are adhesions around it, it is better to choose laparoscopy, and the doctor can cut the adhesions under the direct vision of the laparoscope. In addition, laparoscopy has a very accurate diagnostic role, sometimes in the examination process will be found in the fallopian tube obstruction is not the main cause of infertility, but another reason, such as endometriosis. In the clinic, we also encountered such patients, initially found that the tubes are blocked, but in the laparoscopy found that the real reason is the ovary wrapped around a layer of membrane, resulting in the egg can not be discharged, laparoscopy will be stripped of this layer of membrane, and soon the patient was successfully pregnant. For those who have failed interventional or laparoscopic treatment, surgical treatment can be chosen as appropriate, directly repairing the fallopian tubes and reconstructing the umbilical end of the fallopian tubes under the microscope, but the effective rate is only about 30%, and the risk borne by the patient is relatively increased. The treatment of tubal obstruction is tricky and the cycle is long. For these patients, under what circumstances should they give up the treatment and turn to IVF? After three months to six months of regular water, intervention, laparoscopic treatment failed or by imaging found that the function of bilateral fallopian tubes is seriously damaged, should choose IVF as soon as possible. In the clinic, it is also found that some patients with hydrosalpinx, not only the umbilical atresia of the fallopian tube, but also the chorionic villi and cilia of the fallopian tube have lost their functions, the fallopian tube has lost the role of picking up and transporting eggs, and it is useless to pass through the lumen of the tube, so it would be better to use in vitro fertilization as early as possible. Whether it is general water passage, intervention or laparoscopic treatment, they are all invasive surgeries, what are their hidden dangers? If strict sterilization procedures are followed, there are generally no hidden dangers. If the requirements of aseptic operation are not met, problems may arise and bacteria from the vagina and cervix may be easily brought into the uterine and abdominal cavities. Some patients who have vaginitis, cervicitis and endometritis should also not have water-conduction therapy, even though the liquid used for water-conduction therapy contains certain antibiotics, which also tends to spread the inflammation and aggravate the condition, and should be considered after the inflammation is cured. There is information that for women with congenital absence of fallopian tubes, tubectomy or severe obstruction, artificial fallopian tubes can be made, is this really true? I have heard of such a suggestion, but so far I have not seen any successful reports. Even if the artificial tubes are successful, tubal transplantation is still needed, which carries certain risks. If the purpose is for fertility, it seems that there is no need for this and it is perfectly possible to achieve the purpose through in vitro fertilization (IVF). Infertility due to blocked fallopian tubes has shown an upward trend in recent years, what should women do to protect their fallopian tubes? The first step is to use contraception and avoid abortion as much as possible. A lot of tubal obstruction is caused by irregular abortion, even if the regular abortion should not be done frequently, otherwise it will also increase the chance of infection. Secondly, pay attention to sexual hygiene. Women should be prohibited from having sex for one month after abortion or during the puerperium; both husband and wife should be clean to prevent sexually transmitted diseases. Thirdly, women who have pelvic inflammatory disease or post-abortion infection, the treatment should be thorough, do not think that no symptoms is well, should be in the disappearance of symptoms and then take two weeks of antibiotics to do.