Many people think that infertility is mostly caused by the woman, and they always investigate the woman, spending a lot of time and money. In fact, the causes of infertility are very many, on the whole, the wife unilaterally caused by infertility accounted for 40%, the husband unilaterally accounted for 30-40% of the causes, the husband and wife together accounted for 20-30%. Therefore, all infertile couples should go to the hospital at the same time for examination to find out the causes and treat the symptoms. The most important thing for the man is to check the semen routine, which is much simpler than the various tests for the woman and is painless and indicative of the problem. Therefore, the physician will usually recommend the male partner to check a semen routine (80 yuan). 1, if the semen test is normal, basically can rule out the male party caused by the possibility of infertility, then you can start from the female party to find the reasons. 2, if the semen test no sperm, the next need to check the cause of no sperm, clear is obstructive, or non-obstructive azoospermia. The final testicular biopsy to determine whether the testicles have spermatogenesis; if the puncture is still no spermatozoa, indicating that the male partner is not fertile, there is no need to do other tests. 3, if the semen examination is less spermatozoa, weak spermatozoa, malformed spermatozoa, etc., then it can be judged that the male partner has low fertility, and also need to further look for the cause of the disease, such as varicocele and other possibilities, and then symptomatic treatment. At the same time, the female partner should also start the examination, which will narrow down the delay in the treatment of the male partner due to the long examination cycle of the female partner.