There are many causes of hpv infection, especially related to the age and sexual habits of the individual. Among them, the most important are sexual infection, indirect hpv virus infection and mother-to-child transmission. Sexual infection is the most important cause of hpv infection. The impact of sexual life on human health is far more than we can imagine, yet there are still many people who do not think so. When you have sexual contact with a person who has the hpv virus, the warts on your genitals are rubbed and then enter each other’s body, causing the hpv virus infection. Adults must practice hygienic sexual habits to minimize the chances of hpv infection. Indirect hpv virus infection is also an important cause. In daily life, some people do not care about hygiene and share various household items with others. hpv virus can spread infection through personal items such as bath towels, underwear and undergarments. It is very useful to prevent hpv infection from daily life. In addition, maternal transmission can also lead to hpv infection. Some people with hpv are not and treated well before they become pregnant. When the child is born, there is a high risk of being infected by the hpv virus from the mother. Therefore, before a woman decides to prepare for pregnancy, it is important to have a thorough examination and to control or treat any factors that may spread to the fetus. The causes of hpv infection are not known above, so it is important to raise awareness of the hpv virus to minimize the possibility of being infected.