The nine-valent cervical cancer vaccine is generally suitable for women between the ages of 16 and 26, and is particularly effective in preventing cervical cancer in women who have not had sex. It can also be given to women who have had sex, and it can also be given to women infected with HPV to prevent cervical cancer. However, breastfeeding women and pregnant women are not allowed to receive the cervical cancer vaccine to avoid the impact on their babies. If you are pregnant after one dose of cervical cancer vaccine, you should stop the next two doses of the vaccine and wait for the rest of the doses to be administered after the baby is born and breastfeeding, and the pregnancy should be closely monitored by the doctor, with regular maternal examinations and ultrasound and Down screening tests. If abnormalities are found in the fetus, the pregnancy should be terminated in time to avoid the emergence of malformed children.