Babies should pay attention to the MMR vaccine should be observed for 30 minutes after vaccination, in addition, careful care should be taken at the site of vaccination to avoid infection of the needle mouth of the vaccination, and a light diet should also be taken after vaccination. MMR vaccine is a triple vaccine, which is a vaccine to prevent measles virus, rubella virus and mumps virus infections. After receiving MMR vaccine, parents should take their babies and observe them for 30 minutes at the site, and if the babies are allergic to the vaccine and have symptoms of rapid-onset allergic reactions such as respiratory distress, low blood pressure, and shock, then they can get timely treatment. In addition, after taking the baby home, care should also be taken to take care of the baby’s needle opening to avoid infection, redness and swelling at the needle opening. After vaccination, the baby should be fed with light and easy-to-digest food, and attention should also be paid to keep the baby warm to avoid the baby catching a cold.