cervical cancer is the second most common cancer in women worldwide, and it is the principal cancer of women the possible outcome of genital infection with high risk human papillomavirus (HPV) and is preceded by a phase of persistent HPV infection during which the host immune system fails to eliminate the virus. Cervical cancer occurs when normal cells in the cervix change into cancer cells. This normally takes several years to happen, but it can also happen in a very short period of time. Molecular epidemiologic evidence clearly indicates that certain types of human papillomavirus (HPV) are the principal cause of invasive cervical cancer and cervical intraepithelial neoplasia. More than 80 HPV types and about 40 types can infect the genital tract