The World Health Organization defines male infertility as the failure to conceive for one year due to male factors after the couple has had normal sexual intercourse without using contraception. A routine semen test is only a set of parameters to understand the male fertility situation. It has no absolute significance except for azoospermia and dead sperm. And there are many limitations. First of all, routine semen is not a functional test. It is a rough judgment of fertility only by the density, vitality and morphology of sperm, which is not very accurate, just like judging people by their appearance. A handsome and dashing one does not necessarily have superb working ability. Secondly, routine semen analysis is not able to determine the fertilization ability of the few sperm that reach the fertilization site. Instead, it is common for some doctors and patients to be treated for minor abnormalities in the semen routine. It seems that 100% of the causes of infertility are due to this. Instead, the examination and treatment of the real causes of infertility are delayed. Therefore, to properly assess male fertility, a comprehensive judgment is needed in conjunction with clinical information such as medical history. Therefore, the semen routine can only be combined with the medical history and analyzed on a case-by-case basis, otherwise it is too naive to rely on a single laboratory test to cure the disease. It is more irresponsible to the patient.