Infertility, medically, refers to a person who has had normal conjugal life without contraception for two years after marriage and has not become pregnant. At present, there are many methods to treat tubal infertility, including Chinese medicine treatment, hydrotherapy, hysteroscopic laparoscopic treatment, surgical treatment and artificial assisted reproduction. Interventional treatment, which is developed along with high technology, is increasingly popular among patients because of its diagnostic and minimally invasive features, and has achieved promising clinical results. The method is safe, effective, simple and intuitive. Since conventional hysterosalpingography tends to cause spasm of the fallopian tube sphincter and painful dilatation of the uterine cavity, it cannot increase the pressure of the contrast agent into the fallopian tube and the squeezing and separating effect of the contrast agent on the fallopian tube, thus it tends to cause false obstruction and often fails to show the true site and cause of obstruction. This can directly increase the hydrostatic pressure in the fallopian tube and overcome the pain and sphincter spasm caused by overexpansion of the uterine cavity, and can show the cause and location of obstruction more clearly. At the same time, mucus plugs and debris can be pushed away to open the fallopian tubes, and mild adhesions can be loosened under certain pressure. The diagnosis and treatment of tubal infertility is a difficult problem in the diagnosis and treatment of infertility. Tubal blockage is often caused by abortion, spontaneous abortion, medication abortion, induction of labor, caesarean section, postpartum infection, orchitis, removal of birth control ring, tuberculosis, long-term vaginal bleeding, unclean sexual intercourse, pelvic infection, tubal endometriosis and other causes of tubal wall adhesion, congestion, edema and blockage, resulting in the inability of sperm and egg to unite, which eventually leads to infertility. It is only when the patient goes to the hospital for infertility-related examination that the cause of infertility is tubal blockage. Ordinary tubal lavage (also called lavage) examination cannot make a correct diagnosis of tubal obstruction. Only through selective hysterosalpingography can we know the exact location, nature and degree of blockage and whether there are adhesions with the pelvis, so that we can take corresponding effective treatment measures. The volume and surface area of the uterine cavity is much larger than the cross-sectional area of the catheter and the tubal cavity, and according to the fluid dynamics principle, the pressure is equal to the pressure of the force area. Therefore, the pressure of the injected fluid into the fallopian tube is very limited. Conception is an extremely complex physiological process and any obstruction can lead to infertility. It is relatively easy to check for uterine and ovarian causes of infertility. If tubal recanalization fails or imaging reveals severe hydrocele in the fallopian tubes that prevents normal pregnancy, IVF can be considered. Because of the low success rate and high cost of IVF, selective imaging and pre-intervention are not the best options.