Tubal irrigation can sometimes open the slightly blocked tubes, because some tubal blockage is caused by mucus in the fallopian tube, or a small amount of endometrial tissue blockage, if you use the method of irrigation, you can unclog these substances, but if the tubes are adhered to the adhesion and the adhesion is more serious, with the method of irrigation can not be opened. Need to do tubal examination, the best is to do tubal imaging, can be directly under the X-ray irradiation can see whether the fallopian tube is open or not, purely with the method of water can not determine whether the fallopian tube is open or not.