Breastfeeding is not a contraindication to vaccination with the New Crown Vaccine, and the choice of vaccination should be made on the basis of need in consultation with a specialist. Adverse reactions, such as fever, headache, nausea, vomiting, diarrhea, cough, etc., are likely to occur after vaccination, causing health hazards during breastfeeding. Moreover, it is not clear clinically whether vaccination with the New Crown vaccine affects infants, so, for safety reasons, maternity is clinically contraindicated for vaccination with the New Crown vaccine. There are other ways to avoid infection during breastfeeding, such as avoiding crowded places and wearing masks when going out. Ensure adequate sleep, eat more fresh vegetables and fruits, and improve your immunity. Women who are breastfeeding and have the desire or need to receive the New Crown vaccine can consult a professional doctor, who will choose whether or not to receive the vaccine according to the specific situation.