There are several examination methods, each with its own advantages and disadvantages, as follows Lysis: convenient, concise, low cost, and much used in primary hospitals. If there is no resistance and no significant fluid reflux, or if ultrasound reveals fluid in the pelvic cavity, it is possible to diagnose patency of at least one of the fallopian tubes, but it is impossible to determine the presence of pelvic adhesions and pelvic lesions. Hysterosalpingography with iodine and oil: to find out the condition of the uterine and tubal cavities and the presence of pelvic adhesions, but false positives can occur and cannot be resolved if the tubes are in spasm. Laparoscopy: the gold standard, which allows observation of specific conditions such as adhesions, endometriosis, and can solve problems at the same time, but cannot see the uterine and tubal cavities. It is a minimally invasive procedure but is more expensive. How to choose the tubal examination method? It should be based on the patient’s specific situation. Repeated fluids and imaging should not be used because they do not solve the problem and each pelvic operation may cause the chance of pelvic infection. In general, the tests are simple to complex. If all the tests are abnormal and you are still not pregnant, it is recommended that a hysteroscopy is still needed as there are often positive findings.