Early sexual behavior may lead to infection, genital damage, and even affect the future pregnancy, etc., as follows: 1, lead to cervical cancer infection: if women have sex too early, it is a high-risk group of HPV infection, and even cervical cancer, the HPV virus spreads through sexual behavior, and girls don’t know how to protect themselves when they have sex too early, and epidemiological studies have found that early sexual behavior is one of the high-risk factors of HPV infection and cervical cancer; 2, damage to genitals: if girls don’t protect themselves, it may lead to unwanted pregnancy, and usually they don’t tell their parents and teachers. infection, causing one of the high-risk factors of cervical cancer; 2. Damage to genitals: if girls don’t protect themselves, it may lead to unwanted pregnancy, and unwanted pregnancy has to be aborted, and they usually don’t tell their parents and teachers, which may lead to serious consequences, such as purchasing medicines privately, or going to a small clinic to have an abortion, which may jeopardize the health of the girl’s genitals, and even affect the pregnancy in the future. Some girls do not even know that they are pregnant after having sex, and wait until their stomachs begin to ache regularly and they are about to give birth without knowing that they are pregnant, and in the clinic there are also some girls who have to give birth because of regular contractions to be examined, which are the serious consequences of premature sexual behavior, coupled with the lack of proper parental guidance and shyness to speak out.