The MMR vaccine breastfeeding mothers usually need to abstain from eating for 3 to 5 days, if the child’s adverse reaction is serious, then you need to consult a doctor in a timely manner. The MMR vaccine breastfeeding mothers usually need to abstain from eating for 3~5 days, during this period, we should pay attention to light diet, do not eat spicy, cold and other stimulating food, at the same time pay attention to abstain from smoking and drinking, to avoid alcohol stimulation triggered by adverse reactions. Usually after 3~5 days, the child has no clear adverse reaction, then can eat normally. However, if the child fails to avoid eating or for other reasons, causing an obvious adverse reaction, such as fever, rash, etc., it is necessary to immediately consult a doctor. At this time, you need to immediately consult a doctor, under the guidance of the doctor to carry out blood tests, etc., and at the same time to take symptomatic antipyretic and other treatments. Specific to the doctor’s guidance shall prevail, according to the doctor’s instructions to deal with can.