Infertility is medically defined as the absence of pregnancy after one year of normal sexual life without using any contraception. Infertility can be clinically categorized into primary infertility (never having had a pregnancy after marriage) and secondary infertility (those who have had a pregnancy after marriage). About 45% of infertility cases are caused by the female partner. Here are the female causes of infertility. 1, affecting the egg, sperm or fertilized egg delivery: the egg is discharged into the fallopian tube, the sperm is ejected into the vagina, but also through the uterine cavity, the fallopian tube side and the egg meets, fertilized egg through the fallopian tube into the uterine cavity. Studies have found that many infertile women with inflammatory diseases of the reproductive tract have a bacterial plasmid in the vagina, cervical secretions and endometrium, which may be the cause of infertility, and is estimated to be related to the bacterial plasmid attached to the tail of the sperm, affecting the activity of the sperm. In women with unexplained infertility, the detection rate of plasmodium was as high as 85-95%, compared with 23% in controls of fertile women. After treatment, the conception rate can be significantly increased. 2, affect the egg development: hypothalamus-pituitary-ovarian axis dysfunction, affecting egg maturation or interfering with egg discharge; congenital ovarian underdevelopment, surgical removal of the ovaries or external environmental changes and mental and emotional impact, etc., can affect ovulation. 3, affect the sperm upward: such as vaginal and cervical inflammation, vaginal diaphragm, uterine atresia or endocrine disorders resulting in cervical mucus is too thick.