The conditions for vaccination against cervical cancer mainly include age appropriateness and exclusion of contraindications. Precautions are mainly observation and dietary precautions. 1. Age appropriateness. You need to choose the vaccine according to your age. For example, the appropriate age for the nine-valent HPV vaccine is 16 to 26 years old. Quadrivalent and bivalent are 9 to 45 years old. 2. People with contraindications to vaccination cannot be vaccinated. For example, during pregnancy and breastfeeding, you can’t get vaccinated. People with a history of protein allergy should not be vaccinated. Cannot be vaccinated in the acute stage of disease, such as fever. Can not be vaccinated with other vaccines at the same time, need to be spaced out for a certain period of time. 3. Precautions after vaccination. Observe for half an hour after vaccination to see if there are any adverse reactions, such as rash, chest tightness and dyspnea. Observe the local area for redness and swelling.