Tubal disease is the most common cause of female infertility, accounting for 30% to 40% of the causes of infertility. Tubal lavage is a common examination method for women with infertility, but because there are no direct visual observation indicators, the evaluation of tubal patency is blinded by the subjective judgment of the doctor. The computerized tubal lavage instrument can automatically inject fluid and determine the pressure, which is highly recommended by some hospitals. Hysterosalpingography can clarify the site of tubal obstruction, and can also show some lesions of the fallopian tubes and endometrium in a more visual way. Laparoscopic tubal lavage is currently a better test, but it is more expensive and cannot be used as a routine test. Evaluation of the effectiveness of various tubal examinations: (1) The accuracy of tubal lavage is low and has long been eliminated from use by the World Health Organization. The disadvantages are: (1) The routine operation of tubal lavage is judged based on the subjective feeling of the doctor, and the results of diagnosis have a large error. In the case of hydrosalpinx, although all the fluid can be injected without resistance, it actually enters the hydrosalpinx cavity, while the fallopian tubes are not patent; when resistance is encountered during fluid injection and disappears or decreases after appropriate pressure is applied, and then fluid is injected smoothly, it is mostly judged to be incompetent or mild adhesions are unblocked, but in fact most of the contrast fluid is reversed into the uterine vessels; in some patients, excessive tension during the examination causes tubal The diagnosis of a specific side is based on the patient’s subjective feeling, and it is impossible to accurately determine whether the tubal obstruction is unilateral or bilateral, let alone to diagnose which specific location of the tubal obstruction has occurred. Repeated tubal lysis may make the obstruction more serious and weaken the peristaltic ability of the tubes and the swinging ability of the cilia, and may also become a cause of hydrosalpinx, which may affect the normal conception of the patient. (3) The computerized lysis instrument is currently over-promoted by some for-profit hospitals, but its principle is not essentially different from that of the common tubal lysis examination. (2), HSG, as a classical diagnostic method for uterine tubal abnormalities, can not only observe the abnormalities in the uterine cavity, but also evaluate the patency of both fallopian tubes at the same time, and can be used as an economic and effective method of choice for tubal examination. However, as an indirect examination method, the diagnosis lacks specific signs and is easily influenced by factors such as contrast agent, and differences in interpretation of film reading, etc. The compliance rate of HSG for the diagnosis of cystic obstruction and hydrocele is clear, while the compliance rate for tubal patency with the so-called distortion, cystic adhesion and poor morphology is very low, and the results of its diagnosis need to be considered comprehensively. (3) Combined hysterolaparoscopy is an intuitive and accurate diagnostic method for tubal infertility. Combined surgery is performed at the same time with diagnosis, which is safe and effective.