There are many causes of infertility, involving both partners: 1. Male infertility is called male infertility: male factors alone account for 40-50%. 2. In women, there are infertility and sterility: infertility refers to the inability to conceive, i.e. a couple of childbearing age living together for a long time, having a normal sexual life, failing to conceive without contraception, due to abnormalities of sperm or (and) eggs, or obstacles in the reproductive tract that prevent sperm and eggs from meeting, uniting and laying; 3. The sperm and egg are united, but the embryo or fetus is not able to grow or deliver after the endometrium has been laid, and no live baby is obtained. The incidence of infertility increases significantly with the age of women, so early diagnosis and treatment are very important.