The cervical vaccine, or HPV vaccine, plays a big role in preventing cervical cancer. Cervical cancer is mostly caused by human papillomavirus infection, i.e. HPV infection, and is usually prevented clinically by vaccination, which can effectively reduce the chance of cervical cancer. Of course, not all people are suitable for cervical vaccination, and there are certain contraindications and precautions, as follows: 1. Contraindications: 1. those who are allergic to the active ingredients or formulation of cervical vaccine, such as allergy to yeast; 2. those with acute diseases, severe chronic diseases, acute exacerbation of chronic diseases and fever; 3. women during pregnancy preparation, pregnancy and lactation; 4. those who have received other types of cervical vaccine, including bivalent vaccine, quadrivalent vaccine or nine-valent vaccine; 5. The interval between vaccination with the new crown vaccine should be more than 14 days, and priority should be given to completing the new crown vaccination, and the cervical vaccine should be given 14 days after completing all doses of the new crown vaccine; 6. Avoid the menstrual period for vaccination. Precautions: 1. diet: it is recommended to prohibit smoking and alcohol within 1 week after vaccination, while paying attention to a light diet and trying not to eat sour, spicy and stimulating food; 2. rest: for patients after cervical vaccination, they must pay more attention to rest and avoid lifting heavy objects to prevent overexertion, while maintaining a good sleep; 3. no bathing: patients should pay attention to the vaccine in After vaccination, try not to take a bath within 3 days, try to keep the injection site dry and do not touch the water to avoid the infection phenomenon. For women who have already had sexual intercourse, it is recommended to have a relevant examination before vaccination of the cervical vaccine to ensure that there is no HPV infection before vaccination.