The seminal vesicles are the place to store semen and help sperm mature. Sperm are produced by the testes and temporarily stored in the seminal vesicles through the epididymis and vas deferens, and during conjugal life or seminal emission, semen is ejected from the seminal vesicles through the ejaculatory ducts, so the seminal vesicles are a very important organ for male reproduction, and any seminal vesicle disease can affect fertility. The most common clinical symptoms are hematospermia and obstructive azoospermia. Hemospermia is blood in semen, which can be caused by inflammation, stones and tumors; if obstruction is caused by lesions of seminal vesicles and ejaculatory ducts, it will cause no sperm in semen, forming azoospermia. Spermoscopy is a new technology that has emerged in the past 2 years. It is a small endoscope that passes through the prostatic capsule, ejaculatory duct and bilateral seminal vesicles under the direct view of the monitor, which can not only accurately check whether there are inflammation, stones, tumors and other lesions in the seminal vesicles, but also break up stones, burn off tumors, flush blood clots and pus with laser through the spermoscope to achieve a good treatment purpose. Spermoscopy is less painful and quicker, solving problems that could not be solved before, and is the most suitable examination method for patients with azoospermia and hematospermia.