After ovulation, the mature egg meets the sperm in the fallopian tube, fertilizes, and forms an embryo, which peristalsis from the fallopian tube into the uterine cavity for positioning, invasion, and implantation in about 3-4 days. Therefore, for pregnancy, the fallopian tubes must first be open, and they must also have the function of transporting and nurturing eggs. Currently, the main methods of tubal examination are tubal iodine hydrography (HSG), hysteroscopic tubal lavage, hysterolaparoscopic surgical tubal lavage, and saline ultrasonography; HSG is relatively easy to perform and there are images available for doctors to review, so it is currently the most used in diagnosing tubal patency. Blockage, incomplete blockage or fluid accumulation in the fallopian tubes can affect conception. In cases of bilateral tubal obstruction or hydrocele, natural conception is almost impossible and requires the use of assisted reproductive technology to replace the tubes or hysteroscopic surgery to unblock them. After the initial infertility examination, both methods can be considered if the male partner has normal semen, the female partner is <35 years old and the ovarian reserve function is good; if there are any of the above abnormalities, direct IVF is recommended. Performing tubal lavage alone may cause hydrosalpinx in some patients with tubal obstruction, destroying the function of the fallopian tubes in transporting and nourishing eggs, so the choice needs to be made carefully. For patients with incomplete tubal obstruction, the doctor will read the film to see the degree of tubal obstruction. If the degree of obstruction is mild, the patient will be advised to monitor ovulation on an outpatient basis or perform IUI and try to conceive for 3-6 months, and if no pregnancy occurs, she will be transferred to IVF. If the obstruction is severe, or if the male partner has severe semen abnormalities, or if the female partner has decreased ovarian reserve function at an advanced age, direct IVF is recommended. If you also have blocked or partially blocked fallopian tubes, please talk to your doctor and don't miss the best time to do IVF. Because tubal problems can be solved with the help of advanced scientific methods, but missing the optimal age of fertility and declining quality of eggs cannot be improved by medical technology.