HPV vaccination precautions include precautions before vaccination, precautions during vaccination and precautions after vaccination. 1. Precautions before vaccination: Pregnant women or women who plan to get pregnant are not suitable for cervical cancer vaccination. Therefore, you should check whether you are pregnant before vaccination. 2. Precautions during vaccination: Stay for at least 15 minutes after vaccination so that the doctor can fully observe whether there is any timely reaction. 3. Precautions after vaccination: It is not recommended to smoke or drink alcohol immediately after vaccination; the injection site should not be exposed to water for 2 days and the clothes should be changed frequently; to avoid bacterial infection at the injection site, it is recommended to take contraceptive measures within 3-6 months after vaccination. It is recommended to take HPV vaccination under the guidance of medical professionals.