A woman who does not get pregnant for 12 months due to lack of contraception is called infertile. The causes of infertility include primary infertility and secondary infertility. There are a number of reasons for infertility, but the first thing to consider is whether it is a problem with the sperm or follicles of the male or female.1 If the sperm of the male has a high malformation rate or is not energetic enough, he may not be able to get pregnant.2 If the female’s follicles are poor in quality or do not ovulate normally, she may not be able to get pregnant either. A woman’s uterine lining is too thin or she doesn’t have menstruation, and ovarian endocrine disorders can also cause failure to get pregnant. Polyps in the lining of the uterus or tumors in the uterine cavity may also affect pregnancy. Tubal inflammation, tubal tuberculosis, tubal adhesion and other problems can lead to tubal abnormality, thus affecting pregnancy. Therefore, the exact cause should be diagnosed according to the examination of both husband and wife to confirm what the problem is that can’t get pregnant.