It is generally not recommended to change the milk powder before and after the baby’s vaccination, which may cause discomfort to the baby, but there are individual differences. Babies may experience some adverse reactions such as fever, dizziness, loss of appetite, etc. after vaccination. The change of milk powder may also cause discomfort, such as diarrhea and vomiting, small red bumps on the skin, and so on. If you change milk powder before or after vaccination, these symptoms may appear at the same time, thus aggravating the condition, so it is generally not recommended to change milk powder before or after vaccination. However, special circumstances cannot be ruled out. If the baby’s own physical condition is very good, and there is no adverse reaction to the usual transfer of milk and vaccination, it is also possible to switch milk before and after vaccination, and you need to pay attention to observe the baby’s symptoms. If the baby in the vaccine, the body temperature rises, headache and other adverse reactions, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, symptomatic treatment.