Tubal occlusion usually has no specific symptoms. It is often diagnosed by imaging and often manifests clinically as infertility and ectopic pregnancy. 1. Infertility: Infertility caused by blocked fallopian tubes is the most important cause of tubal infertility. The incidence is 20% to 30%. 2. Ectopic pregnancy: Chronic tubal inflammation can lead to adhesions in the folds of the tubal lumen and partial blockage of the tubal lumen. This can delay or prevent the fertilized egg from entering the uterine cavity and thus implanting in the fallopian tube where tubal pregnancy occurs, which is the most common location for what we call ectopic pregnancy. In addition, tubal blockage can cause pain in the lower abdomen of varying degrees, mostly vague pain, lumbosacral pain and pelvic cramping. Menstrual manifestations are mainly increased menstrual flow and irregular cycles. In some cases, due to pelvic congestion, the abdominal pain starts a week before menstruation and gets worse the closer the period is, until the onset of menstruation. Some patients may present with increased leukorrhea. Blockage of the fallopian tubes is mostly due to recurrent episodes of chronic tubal inflammation, which leads to mucosal hyperplasia and blockage or narrowing of the lumen. During gynecological examination, the thickened fallopian tubes can be palpated on one or both sides of the uterus in the form of cords, and there is slight pressure pain.