The testes of men are like a sperm production “factory”, and the varicocele in the testes is like a “production line” for sperm production. The spermatozoa are produced in the testes from the primitive spermatogonia to the primary spermatocytes, then to the secondary spermatocytes and sperm cells, and finally to the mature spermatozoa, which takes about 60 days. The sperm produced in the testes are only morphologically mature, but functionally, the sperm need to remain in the epididymis for about 2-3 weeks before they finally acquire the ability to move and fertilize and become truly mature sperm. In total, it takes approximately nearly 90 days to develop from a primitive spermatogonial cell into a mature sperm. The sperm production factory, the testes, is highly productive, producing an average of about 1,000 sperm per second, which are then transported in a steady stream to the sperm storage “depot”. The sperm is mainly stored in the tail of the epididymis before it is ejected from the body. When the male reaches orgasm, the smooth muscles of the tail of the epididymis, the vas deferens and the ejaculatory duct undergo coordinated rhythmic contractions, injecting the sperm with the fluid in the epididymal duct and the vas deferens directly into the posterior urethra through the ejaculatory duct, while the seminal vesicles undergo several peristaltic contractions, discharging their secretions into the posterior urethra, which has the effect of flushing the urethral sperm. At this time, the smooth muscle of the prostate also contracted, causing the discharge of prostatic fluid, and finally through this series of reflex actions and the coordinated contraction of the muscles of the perineum, the semen was discharged through the urethra, completing the entire ejaculation process. The semen is mainly made up of sperm and seminal plasma (mainly including seminal vesicle fluid and prostate fluid), but before ejaculation, these three parts are separate from each other.