MMR and Brain B can be vaccinated together, but when they are vaccinated together, we need to pay attention to diet, physical condition, reaction after vaccination and whether there is fever. 1. Physical condition: Before vaccination, we should make sure that infants and children are healthy; if they have acute diseases or fever, they are not suitable for vaccination, and it is recommended that they should be vaccinated after their diseases are cured. 2. Post-vaccination reaction: After the vaccination, you should pay attention to whether the vaccination site of infants and young children have hard lumps, redness and swelling and other symptoms, in addition to pay attention to whether the mental state is good. 3. Whether the fever: after vaccination should also pay attention to whether the infant has fever phenomenon, if the fever after vaccination, it is recommended to consult a doctor in time. MMR-B need to play together in the diet, physical condition, whether the fever and other aspects of attention, avoid inoculation site water within 24 hours after inoculation, pay attention to the diet light, if there are adverse reactions after inoculation is recommended to consult a doctor in a timely manner.