With the intensification of environmental pollution, the increase in the pace of life and survival pressure, and the early occurrence of certain diseases, the incidence of male infertility is increasing year by year, and more and more male friends suffer from low semen quality and male infertility. The reason for this is that it is not a problem for the male, but a problem for the female. In layman’s terms, it means that the male partner is the cause of the non-pregnancy. Male infertility is only a general name, it can be divided into various types such as oligospermia, azoospermia, weak spermia, leukocyte spermia, deformed spermia, seminal fluid indigestion and immune infertility, so the causes of male infertility are very complex. How much do you know about its causes? 1, male reproductive system diseases are directly affected by the quality of semen. For example, testicular dysplasia, vesicular gland disease, epididymal disease, chronic prostatitis, varicose veins and so on. 2, some diseases of the central nervous system can also directly affect the male reproductive function, such as some diseases of the hypothalamus and pituitary gland. 3, certain chronic diseases, autoimmune diseases, chromosomal abnormalities, harmful substances and bad work can also have an impact on semen quality. Therefore, male infertility should first be clarified as to the cause and then treated symptomatically, which is very important for the prognosis of the disease.