Babies with jaundice should not be vaccinated, as jaundice may be caused by impaired liver function or other related diseases. Vaccination involves inoculating the body with a small amount of a virus, which may aggravate the symptoms of the original disease and may induce vaccine-associated diseases. The premise of vaccination requires that the baby is in perfect health before vaccination can be carried out. Preventive vaccination if delayed, parents do not have to worry too much, most of the vaccine can be replenished, most of the baby’s months of age when the month of hepatitis B vaccination, three months of age at any time you can replenish the vaccine. If the baby is over three months old, liver function and hepatitis B five tests will be conducted, and the results of the tests will be normal, and then the vaccine will be replenished.