The MMR vaccine for babies requires a total of two injections, the first at 8 months of age, and the second at 18~24 months of age, which provides a booster immunization effect. The full name of MMR vaccine is MMR triple vaccine, which can prevent measles, mumps and rubella, three common acute respiratory infections in children. It is suitable for infants and children over 8 months of age, who are susceptible to measles, mumps and rubella. The vaccine requires two injections, the second of which is usually administered when the baby is 18 to 24 months old, and can have a very good immunization effect. After receiving MMR vaccination, some babies may have symptoms such as swollen lymph nodes in the cheeks or neck, mild fever or rash, which are common adverse reactions that can be relieved on their own after a period of time and do not require special treatment. If your baby is of the right age, you can take him/her to receive MMR vaccine. After vaccination, you need to stay in the hospital for observation to avoid allergy.