In recent years, with the increase of unwanted pregnancies caused by premarital sex and failure to use effective contraception, the rate of abortion has continued to rise, leading to tubal obstruction as a common cause of infertility. A patent fallopian tube is one of the necessary conditions for the union of sperm and egg. Today, we will talk about tubal-related tests. Clinically, the main common tubal tests are: uterine tubal lavage and uterine tubal iodography. Uterine tubal lavage is performed by slowly (about 5ml per minute) injecting saline, dexamethasone and chymotrypsin into the uterine cavity from the cervix through a catheter, observing the amount of fluid injected and the patient’s response, and judging whether the fallopian tubes are patent according to the amount of resistance and fluid reflux when pushing the fluid. The method is simple and can be done in some areas or hospitals with poor medical conditions, without special equipment, without obvious side effects, at low cost, and can be repeated many times, so it is a widely used tubal examination method. However, because the size of the female uterus varies greatly, and because it can only be judged by the doctor’s subjective feeling, drug injection resistance and the doctor’s experience, there is a certain degree of blindness and illusion. At the same time, the lysis test cannot determine which side of the fallopian tube is obstructed and where the obstruction is located, let alone observe the internal conditions of the uterus and fallopian tubes. This method is prohibited in the following cases: 1. Menstrual cycle disorders that have not been corrected. 2. Inflammation of the reproductive organs: acute phase or chronic recurrent phase, not yet controlled by medication. 3.Poor general condition, with serious heart, brain, lung, liver, kidney and other important organ pathologies. Hysterosalpingography is an examination method to find out whether the fallopian tubes are open, the site of obstruction and the morphology of the uterine cavity by injecting contrast agent (76% pantopamine or 40% iodized oil) into the uterine cavity through a catheter, and then taking X-ray pictures according to the contrast agent in the uterus, fallopian tubes and pelvis. This test can observe the internal morphology of the uterus and fallopian tubes, and clarify the site of tubal obstruction and the presence of abnormalities such as submucosal fibroids and endometrial tuberculosis. It can be used to understand the cause of primary or secondary infertility. It not only reveals the presence of congenital malformations or pathological conditions in the uterus and fallopian tubes, but also whether the tubes are patent and the site of obstruction. Again, this method has certain drawbacks and side effects. The main side effects of hysterosalpingography are: 1. iodine allergy, some patients may experience dizziness, vomiting, erythema and other symptoms. Therefore, allergy test should be done before using contrast, and allergic patients should be especially careful. 2.Oil embolism and venous reflux. 3.Infection or abdominal pain. 4.Radiation. The dose of radiation received by the ovaries during the imaging examination is related to the radiation technology equipment, the number of times the film is taken, the distance between the fallopian tube and the film, and the experience of the physician, and the damage of radiation to the germ cells has a cumulative effect, so the operation time should be shortened as much as possible. However, there is no need to worry too much, the current clinical diagnostic radiography is basically low radiation and filtered radiation, the human body receives a lower dose of exposure, safer, and the study found that receiving 1.0Gy of X-ray exposure before conception did not cause embryonic damage. The following conditions are prohibited: 1. Menstrual cycle disorders have not been corrected. 2. Severe systemic diseases that cannot tolerate the procedure. 3. Acute and subacute inflammatory diseases of the internal and external genitalia. 4. Those who are allergic to iodine. Friends can choose the most suitable tubal examination method for themselves under the guidance of the doctor. After making a good choice, do the preoperative examination under the doctor’s guidance, and perform the surgery 3~7d after menstruation, and abstain from sexual life 3 days before surgery. Sexual life is forbidden for 2 weeks after surgery.