The degree of tubal blockage can be of three types: The first is tubal patency, caused by obstruction by debris, dislodged cells or blood clots in the tubes; or the tubes are too thin and curved; or the tubes are adherent to the pelvic wall or neighboring organs, which strains the movement of the tubes. Treatment can be performed using laparoscopy for unblocking. For extra-tubular adhesions, they can also be cut and dissected laparoscopically to “untie” the fallopian tubes. With treatment, most patients can become pregnant. In the second case, the fallopian tubes are occluded and less damaged, but most of them are normal. In this case, tubal unblocking or 24-hour placement can be performed through combined uterine and abdominal surgery. If there is fluid in the fallopian tube, an opening can be made over it and the fluid can be released and turned and sutured to prevent re-adhesion. Generally speaking, the surgery is more effective, with a success rate of over 90%. In the third case, the fallopian tubes are completely inaccessible and have severe damage. In this case, the tubal infection is caused by delayed treatment or tubal tuberculosis, which results in scarring, contracture, stiffness and irreversible functional changes. IVF is usually required after surgery to help conceive. Causes of tubal blockage: gynecological inflammation (25%): such as vaginitis, cervicitis, pelvic inflammatory disease, tubal inflammation, adnexitis, etc., often due to these gynecological inflammatory diseases are not treated in time or incompletely treated, the condition does not heal. Long-term inflammatory stimulation causes tubal congestion and edema, thickening and hardening, lumen adhesion, narrowing and blockage, resulting in tubal blockage infertility. Induced abortion (25%): Induced abortion is the main cause of tubal blockage. Due to mechanical irritation, improper operation or incomplete abortion, abortion often leads to various inflammatory infections; with the successive invasion of various pathogenic bacteria, the infection spreads from the uterus to the pelvis and fallopian tubes, resulting in tubal blockage. Long-term vaginal bleeding (25%): Often due to gynecological tumors, dysfunctions, uterine lesions and other causes such as excessive menstruation, prolonged menstruation, incomplete menstruation or even twice a month irregular vaginal bleeding, without timely treatment, over time, secondary inflammatory infections, resulting in ulceration, adhesions and blockage of the inner wall of the fallopian tubes. Impure sexual life (10%): Impure sexual life is the trigger for many diseases. Patients are often infected with various diseases such as gynecological diseases and sexually transmitted diseases due to unclean sex, which can cause tubal inflammation, resulting in different degrees of tubal blockage. Other factors (15%): such as tubal endometriosis, laparotomy, appendicitis surgery, IUD removal and tuberculosis, etc. can cause secondary tubal infection and lead to tubal wall congestion, edema, adhesion and blockage.