Most of the people can be vaccinated with the New Crown vaccine, but it is not suitable for pregnant women who are breastfeeding, people who are allergic to the vaccine components, and people with severe liver and kidney diseases. 1. Pregnant women should not be vaccinated with XKV vaccine when they are breastfeeding: due to the hormone secretion in the patient’s body is more vigorous and the body quality is more special, in order to be on the safe side, so avoid pregnant women and breastfeeding for vaccination. 2. Allergy to vaccine components: allergy to vaccine components will lead to adverse conditions after vaccination, not suitable for vaccination. 3. Serious liver and kidney diseases: Liver and kidney diseases belong to immune system diseases, so the vaccination will make the body’s immune system imbalance, so it is not suitable for vaccination. If you already have a plan to receive the vaccine, you can go to the hospital to consult a professional doctor to make a judgment and verify whether you are suitable for vaccination.