Iodine oil imaging is also commonly known as tubal imaging, it is through a balloon catheter placed into the uterine cavity through the vagina, the balloon will be filled with closed endocervical orifice, through the catheter in the uterine cavity injection of iodine oil, so that the tubes are reverse filling iodine oil in the radiation to develop a way, which can determine whether the patient’s uterus endometrium has a space-occupying lesions, the uterus whether there are congenital developmental deformities, and the patient’s Whether the fallopian tubes are patent and whether there are adhesions near the umbilical end of the tubes. It is currently used more often in gynecology as well as reproductive medicine. Tubal imaging has certain requirements for patients, usually before the examination, patients need to do relevant examinations, such as vaginal secretions, gynecological ultrasound, etc., and only those who meet the conditions can do this examination. It also has requirements on the time of the patient’s examination, usually when the patient’s menstruation is clean for 2-3 days, when the effect is more accurate.