The limitations of conventional uterine tubal iodography make the diagnosis of tubal obstruction significantly deficient, often failing to identify the cause of tubal obstruction. If it is a spasm or mechanical obstruction, whether it is a membranous adhesion, mucus plug obstruction or fibrous adhesion obstruction, etc., especially for interstitial tubal obstruction, selective tubal angiography can help to identify the cause of obstruction, and if it is a mucus plug or membranous adhesion, it can be easily removed and separated, and the tubes can be reopened, thus eliminating the need for invasive surgery such as laparoscopy and caesarean section. Conventional hysterosalpingography is based on the amount of contrast remaining in the fallopian tubes, which has its limitations. In contrast, selective hysterosalpingogram is a separate imaging of the left and right fallopian tubes, and then judged according to the amount of contrast agent applied in the pelvis and the amount of residual in the fallopian tubes, so the diagnosis of unilateral tubal patency is more accurate, and the adhesions around the umbilical ends of the fallopian tubes are more accurate. The therapeutic effect of selective tubal angiography is produced by the squeezing and separation of the fallopian tubes by the contrast medium and fluids and their internal hydrostatic pressure, thus avoiding the spasm of the fallopian sphincter and the painful dilatation of the uterine cavity caused by the conventional contrast medium, and then performing tubal recanalization for the tubes that cannot be completely recanalized. It also provides a basis for further diagnosis and treatment.