Vaccinations for babies are recommended to be given according to the prescribed time and postponement is not recommended. If there are special circumstances, different vaccines have different time, such as newborn hepatitis B vaccine, BCG vaccination is generally not more than three months, specific recommendations to consult the vaccination agency. If it is the newborn hepatitis B vaccine and BCG vaccination is not on time, it can generally be postponed for 3 months. within 3 months, as long as the conditions of vaccination are met, you can be vaccinated at any time, but the time of the subsequent vaccination should be postponed accordingly. In the case of polio vaccine, measles vaccine, rubella vaccine, etc., these vaccines can also be administered at any time when the conditions for vaccination are met after the delay. Different vaccines can be delayed for different times, the specific vaccination time, need to be determined according to the baby’s own specific circumstances, it is recommended to the local formal hospital to consult clearly. If there are no special circumstances, it is recommended to vaccinate on time to ensure the effective concentration of vaccine in the body.