The third booster can be given while breastfeeding. Currently, the New Crown vaccine booster is highly safe. Breastfeeding is not included in the contraindications for the New Crown Vaccine booster, so it is possible to receive the 3rd New Crown Vaccine booster while breastfeeding. After the booster, if the mother does not have any adverse reaction, she can breastfeed and does not need to stop breastfeeding. If the mother feels uncomfortable after the injection, she can wait for the symptoms to go away before breastfeeding. The mother’s body is weak and tired after delivery, so she should pay more attention to her rest after the third booster injection, and take more fresh fruits and vegetables and high protein to ensure high nutritional needs during breastfeeding.