After playing the nine-valent vaccine diet has no obvious contraindications, usually does not affect eating crayfish, but seafood allergies need to be avoided. Nine-valent refers to the nine-valent HPV vaccine, can prevent nine kinds of HPV infection, at the same time reduce the rate of HPV infection, the incidence of cervical cancer and the rate of death, the preventive effect is as high as 90%, the nine-valent vaccine is suitable for women between the ages of 16-26 years of age to be vaccinated. After the nine-valent vaccine did not appear nausea, vomiting, dizziness, skin itching and other adverse reactions, life without allergic reaction to crayfish can be eaten, seafood allergy should be avoided, due to the easy occurrence of allergies after eating, can not identify whether it is caused by vaccination, or seafood allergy caused, will affect the treatment effect, but also affect the effect of vaccination. If adverse reaction occurs after accidental ingestion, it is recommended to go to the hospital in time to take targeted treatment.