Tubal blockage refers to the blockage of the fallopian tubes for various reasons, resulting in the inability of the eggs to be discharged normally, the most direct harm is that women cannot conceive. The most common causes of tubal blockage are: (1) blockage of the fallopian tubes by menstrual lining debris and blood clots; (2) artificial tubal blockage by tubal ligation, mucosal blockage and tubal silver clips; (3) abortion: acute pelvic inflammatory disease and tubal inflammation can easily occur due to abortion, which can lead to tubal blockage; (4) endometriosis. (5) gynecological diseases: vaginitis, cervicitis, endometritis, pelvic inflammatory disease, etc. can destroy the mucous membrane of the fallopian tubes, resulting in scarring and adhesions, leading to blockage of the fallopian tubes; (6) infection: tubal tuberculosis causes thickening, hypertrophy, and closure of the umbilical ends due to infection of the mucous membrane of the fallopian tubes, resulting in blockage of the fallopian tubes. (6) Infection: tubal tuberculosis causes tubal thickening, hypertrophy and closure of the umbilical end due to infection of the mucosa of the fallopian tubes, resulting in tubal blockage. In conclusion, there are many causes of tubal blockage and patients need to go to a regular hospital for diagnosis and treatment.