Cervical cancer is very harmful to women and many people have lost their lives because of cervical cancer, including some famous people. Therefore, we must pay attention to our own changes in life and pay more attention to the occurrence of cervical cancer. First of all, we should understand the causes of cervical cancer in order to prevent it more effectively: a. Causes of pathogens Many pathogens are closely related to cervical cancer and often lead to the occurrence of the disease, especially human papilloma virus, simple scar virus, human cytomegalovirus, Chlamydia trachomatis and EBV. Second, inflammation and trauma to the cervix is generally an important factor in the development of the disease. The presence of cervical erosion and the trauma of childbirth can aggravate the infection of the reproductive tract and increase the risk of developing cervical cancer. III. Sexual confusion and STDs Several surveys and studies have shown that sexual confusion has an important role in the etiology of sperm supply. The complication rate of cervical cancer increases tenfold for those who start sexual life before the age of fifteen or have more than six sexual partners, and the sexual confusion of men also increases the disease rate of their spouses. Sperm is one of the important causative factors for the occurrence of cervical cancer. Semen has a strong pro-mutagenic effect on cervical squamous epithelium, especially in adolescent women, when the cervical epithelium is in a highly sensitive period, the causative factor of semen is more dangerous. In addition, according to epidemiological survey, only ten percent of uncommitted women have cervical cancer, and the complication rate of cervical cancer is high at early age of first birth.