There are a lot of precautions to be taken after vaccination, such as staying in hospital for observation, adjusting diet, and doing contraception. 1. Stay in hospital for observation: After receiving the HPV vaccine, you should stay in hospital for half an hour for observation, and then leave the hospital if there are no adverse symptoms such as high fever and severe dizziness. 2. Adjust the diet: after receiving the HPV vaccine, attention should be paid to the diet, do not consume cold and spicy food, do not eat seafood, and do not drink alcohol, so as to avoid confusion between the adverse reactions and those after vaccination, which will affect the observation and treatment. 3. Contraception: Reproductive tract contact is the main way of human papillomavirus infection. If you have had sex before, it is better to take contraceptive measures in the six months or even one year after vaccination with HPV vaccine. In addition, you should pay attention to rest after vaccination with HPV vaccine, and the wound should not touch water to avoid infection.