First of all, water passage is an early treatment for tubal obstruction, which is still used in primary health care units and has been slowly phased out in large hospitals. It uses gentamicin, chymotrypsin and other drugs plus saline to formulate a water solution, which is then injected through the uterine cavity to achieve the purpose of unblocking and treating blocked fallopian tubes. However, this technology has great disadvantages. 1, it is only based on the doctor’s experience and sense of touch, may I ask, in today’s highly developed evidence-based medicine, experience and sense of touch this thing, how reliable? 2, very often, after the passage of water, the doctor tells you that the tubes are opened by passing 40 ml of medicine, may I ask, is this reliable? Answer: very unreliable. Clinical evidence shows that this “through”, a lot of: (1) through the water into the myometrial vasculature, such as lymphatic vessels, venous pipelines, etc. – professionally known as the “reverse entry”; (2) the tubal pot-bellied originally have lesions, enlargement, dilatation, accumulation of fluids; through the water liquid Not at all pass out of the fallopian tube, but in the dilated tubal abdomen; not only not a little therapeutic effect, but will aggravate the original lesions. Imaging, this is relatively scientific. Because, during the imaging process, the fallopian tube is visible, seeing is believing. According to the objective evaluation of the fallopian tube after the imaging, and then take the next step of treatment measures, is scientific and reasonable.