Normally, it is possible to receive the new coronavirus vaccine during breastfeeding. Considering the importance of breastfeeding to the nutrition and health of infants and young children, and with reference to the international practice, it is recommended that breastfeeding women continue to breastfeed after receiving the new coronavirus vaccine. The contraindications and precautions for vaccination with the new coronavirus vaccine published by the relevant national authorities stipulate that vaccination with the new coronavirus vaccine is permitted during pregnancy and breastfeeding, and that breastfeeding can be continued during the breastfeeding period. Under normal circumstances, there is no serious adverse reaction to breastfeeding women and infants. It is recommended to go to the local vaccination clinic for detailed consultation before vaccination. Contraindications to the new coronavirus vaccine include: 1. Hypersensitivity to the active ingredients of the vaccine, to any of the inactive ingredients, to substances used in the production process, or to those who have developed allergies in previous vaccinations of the same type; those who have previously experienced severe allergic reactions to the vaccine (e.g., acute anaphylactic reactions, angioneurotic edema, respiratory distress, etc.). 2. Those with uncontrolled epilepsy and other serious neurological diseases (e.g. transverse myelitis, Guillain-Barre syndrome, demyelinating diseases, etc.). 3. Those who are experiencing fever, or suffering from acute illness, or acute exacerbation of chronic diseases, or uncontrolled severe chronic diseases. 4. Women during pregnancy.