In fact, there are 3 most common causes of infertility: 1. Fallopian tube factor: it is the most common factor of infertility. The fallopian tubes have the role of transporting sperm, taking in sperm and transporting fertilized eggs to the uterine cavity. Any influence on these functions of the fallopian tubes can lead to infertility. Inadequate development of the fallopian tubes (excessive elongation and curvature, weakened contraction of the wall muscles, loss of cilia and peristaltic function, etc.), inflammation of the fallopian tubes (gonorrhea, tuberculosis, etc.) causing atresia of the umbilical ends or destruction of the mucous membrane of the fallopian tubes, resulting in occlusion of the fallopian tubes. In addition, secondary infection caused by appendicitis or postpartum or postoperative causes tubal obstruction and infertility. 2. Ovulation disorders: polycystic ovary syndrome, premature ovarian failure, functional ovarian tumors, ovarian endometriosis cysts, anovulatory menstruation, amenorrhea, etc. can lead to non-ovulation. 3. Abnormal sperm. There are some other factors such as uterine factors; cervical factors; immune factors and so on. How to find out the blockage of fallopian tube? It depends on tubal imaging, which is a test method used to check the patency of the fallopian tubes in women. It is a test method to find out whether the fallopian tubes are patent, the site of obstruction and the morphology of the uterine cavity by injecting contrast into the uterine cavity and fallopian tubes through a catheter under X-ray, using X-ray diagnosis and radiography. The best time for the procedure is 3 to 7 days after the patient’s menstruation, and intercourse is prohibited 5 days before the procedure. In our hospital, tubal imaging is carried out very well, and many patients come here to have it done. What is the cause of hydrocele tubal blockage? Now with the opening of the society, many young people have the concept of openness, but the same room and do not pay attention to cleanliness and hygiene, or after pregnancy abortion also do not pay attention to prevent infection over time will lead to tubal inflammation, and even chronic pelvic inflammatory disease. After tubal inflammation, the secretion of mucous membrane cells accumulates in the lumen due to adhesions or adhesions at the isthmus and umbilical end due to tubal inflammation, forming tubal pus after blockage, which eventually becomes watery liquid when the pus cells in the lumen are absorbed, or some liquid is absorbed leaving an empty shell, which shows a watery shadow during imaging. There is another kind of tubal obstruction which is the proximal obstruction of the fallopian tube. The proximal obstruction of the fallopian tube is not very effective when treated with laparoscopic surgery and should be treated with interventional intubation or hysteroscopic intubation.