The fallopian tube is an important place for sperm and egg cells to meet and unite to form a fertilized egg. If the fallopian tube is blocked, the fertilization process will not be completed and can cause infertility in women. The blockage of fallopian tubes can be caused by adnexitis, pelvic inflammatory disease and tubal inflammation. The main symptom of tubal blockage is infertility, which generally cannot be accurately judged from the symptoms of physical reaction and should be examined by professional clinical examination. 1. Tubal lavage: saline or a specific mixture is injected into the uterine cavity and fallopian tubes through the uterine cavity tube, and a preliminary judgment is made on whether the fallopian tubes are blocked and the degree of blockage according to whether there is any resistance when the liquid is pushed, whether there is any spillage of the liquid and whether the patient has abdominal pain. 2.Hysteroscopic tubal lavage: Under general anesthesia and formation of carbon dioxide pneumoperitoneum, laparoscope is placed through the abdominal wall and diluted Meridian blue is injected through the uterine cavity to observe the filling pattern of the fallopian tubes and the outflow of Meridian blue at the umbilical end to determine the patency of the fallopian tubes, which is considered as the gold standard for diagnosing the patency of the fallopian tubes. 3.X-ray hysterosalpingography: It is a method to show the uterine cavity and fallopian tubes by x-ray after iodine contrast is injected into the uterine cavity and fallopian tubes through the catheter through the uterine cavity. 4.Uterine and fallopian tube ultrasonography: Under ultrasound surveillance, the flow of contrast agent in the uterine cavity, fallopian tubes and pelvic cavity is observed, and the morphology, mobility and pelvic masses of the uterus, ovaries and fallopian tubes can be examined at the same time. 5.Magnetic resonance hysterosalpingography: This is a technique to inject contrast into the uterine cavity to dilate the originally closed uterine cavity and fallopian tubes, and then perform MRI scanning to obtain three-dimensional images, which is mainly used to diagnose uterine cavity lesions and evaluate the patency of the fallopian tubes. Treatment of fallopian tube obstruction 1. Partial blockage of female fallopian tubes: laparoscopy can be used for unblocking, and most patients can get pregnant after treatment. 2, female fallopian tube occlusion: the degree of damage is mild and most of the fallopian tubes are normal. In this case, tubal evacuation or 24-hour tube placement can be performed through combined uterine and abdominal surgery. The general surgical result is better and the success rate can reach more than 90%. 3. Complete blockage of fallopian tubes: the condition is serious, mostly due to prolonged delay in treatment or tubal tuberculosis infection, due to scarring, contracture and stiffness of fallopian tubes and irreversible changes in function. IVF is usually needed to help conceive after surgery.