A female teacher, Xiao Lin, lies on a cold bed and curls up nervously. The next step was to undergo an ultrasonography to check for tubal patency and to rule out the possibility of uterine adhesions. 2 years ago, a history of informal abortion accompanied by post-abortion fever and increased leucorrhea made the physician highly suspect that her infertility was caused by tubal blockage. And what are fallopian tubes? The fallopian tubes are a pair of long, thin, curved tubes that provide a place for the egg to unite with the sperm and a channel to transport the fertilized egg. It is about 8-14 cm long and is adjacent to the ovaries on the outside, like a small umbrella that can “pick up eggs”, which is why some people call it the bridge of life. Blockage of the fallopian tubes mainly leads to female infertility, accounting for 25% to 35% of female infertility, and the causes of tubal damage are: 1, pelvic inflammatory disease (PID), the source of infection is commonly spread along the mucous membrane of the reproductive tract, such as the endometrium, followed by infection of the lymphatic system, blood circulation system. It can also come from infection of adjacent organs such as perforated appendix. Endometriosis and reproductive tract tuberculosis are the more common causes of tubal blockage. 3. Less common are congenital abnormalities and defects of the fallopian tubes. 4. Rarely, there are pelvic masses that compress and block the fallopian tubes. 5. Medical etiology includes tubal ligation, etc.