Infertility caused by cervical diseases accounts for 5% to 10% of infertility cases. The shape of the cervix and the function of cervical mucus directly affect whether a sufficient number of sperm can swim upstream into the uterine cavity to acquire fertilization capacity. Organic or functional diseases of the cervix influence the ability of semen or sperm to enter and be stored within the cervical canal. As the first gateway for sperm to pass, any anatomical or physiological changes in the cervix can affect sperm passage, leading to infertility.