Hysterosalpingography (HSG) is the most classical method of determining the patency of the uterine cavity and fallopian tubes. Due to the limitations of hysterosalpingography (including imaging with iodized oil or iodized water as the contrast medium), i.e., false-negative or false-positive diagnostic results, and in particular the obvious deficiencies in diagnosis of tubal blockage, the cause of tubal blockage is often not identified. Such as tubal spasm or mechanical obstruction, whether it is membranous adhesion, mucus plug obstruction or fibrous adhesion obstruction, etc., especially for the interstitial part of the tubal obstruction diagnosis is even more insufficient, and selective tubal imaging can help to identify the cause of the obstruction, such as mucus plugs, membranous adhesion is very easy to remove, separation, and make the tubes reopened, which can be exempted from the unnecessary laparoscopy, cesarean section and other traumatic surgery. Hysterosalpingography is based on the review of the flat film of the fallopian tube how much contrast agent residue to determine the degree of tubal patency, generally usually the degree of good to poor is divided into: fluent, fluent but not fluent, fluent but not fluent, fluent but very not fluent, slightly fluent and basically do not pass the pelvic cavity; HSG has certain limitations. Selective salpingography (SSG) is for the left and right fallopian tubes respectively, and then according to the pelvic cavity contrast coating or dispersion and the amount of contrast residue in the fallopian tubes to determine the degree of tubal patency, so the diagnosis of unilateral tubal patency and adhesion around the umbilical end of the tubes is more accurate. The therapeutic effect of selective tubal imaging is produced by the squeezing and separation of the fallopian tube by the fluid pressure of the contrast agent and liquid solution (which has the effect of anti-inflammation and preventing adhesion), thus avoiding the illusion of tubal obstruction caused by sphincter spasms and dilatation pain in uterine cavity due to the contrast agent (iodized oil and iodine solution), and then the guide wire intervention, i.e. tubal recanalization, is carried out to achieve the goal of selective tubal imaging in the tubes of the fallopian tubes, and to achieve the goal of selective tubal imaging in the tubes. In addition to the accurate diagnosis and certain therapeutic effect of selective tubal imaging, the treatment effect can be further improved, which can significantly increase the pregnancy rate of the patients, therefore, on the basis of HSG, in order to further increase the probability of pregnancy, it is very necessary to rationally choose SSG.