The chance of getting pregnant naturally after tubal ligation depends on the degree of tubal blockage before ligation. If the tubes are not heavily blocked before ligation, then the probability of getting pregnant naturally after ligation is higher; if the tubes are heavily blocked before ligation, then the probability of getting pregnant naturally after ligation is not high either. The ability of the fallopian tube to transport sperm and egg smoothly depends on the smoothness of the tube and its peristalsis. Inflammation of the fallopian tubes will block the tubes and make them stiff, affecting both the smoothness of the tubes and its peristalsis. If the blockage of the fallopian tube is mild, its peristalsis is better, and after dredging, the patency of the fallopian tube can basically be restored. Then the probability of natural pregnancy after unblocking is similar to that of normal women, which is relatively high. Tubal blockage is heavier, its peristalsis is very poor, after dredging, although the fallopian tubes are open, but the tubes are stiff, peristalsis can not be fully restored, then the probability of natural pregnancy after dredging is not high, and it is easy to ectopic pregnancy.