Authoritative data show that the incidence of cervical cancer is showing a trend of rejuvenation. According to statistics, 400,000 women worldwide develop cervical cancer every year, and there are about 131,000 new cases of cervical cancer in China every year, which is six times more than that in developed countries. Studies have shown that the triggering of cervical cancer is related to the pathogen of human papilloma virus (HPV). The age of onset of cervical cancer in China is around 40 years old, with urban women having an earlier age of onset than rural women. A study done by the Shanghai CDC in 2010 to analyze the epidemiological trends of cervical cancer in Shanghai showed that the proportion of women under the age of 35 who developed the disease increased from less than 2% in 1970 to more than 10% in 2006. HPV infection alone does not necessarily cause cervical cancer in women with robust immune systems, but factors such as smoking, other microbial infections, specific vitamin deficiencies, hormones and immunosuppression may promote the development of cervical cancer. ”Active sexual behaviors such as early sexual intercourse and irregular sexual partners all increase the risk of developing the disease.” Worldwide surveys show that HPV infection is most often seen in young adults between the ages of 15 and 24, and for the adolescent population, the increasing likelihood of HPV infection is accompanied by earlier and increased sexual activity.