MMR vaccination requires children eight months of age or older to be vaccinated. The MMR vaccine is a live attenuated vaccine and is generally immunized for 11 years, so it can be revaccinated once more at the age of 11-12 years. For contraindications to MMR vaccination, the vaccination should be postponed if there is an acute phase of infection and symptoms of upper respiratory tract infection such as fever, cough and sore throat. If you are allergic to a certain component of the vaccine and cannot be vaccinated, postpone vaccination if you have an acute period of skin rash or asthma around your body. After vaccination, pay attention to the local reaction and observe whether the body has fever, etc. Do not take a bath within 24 hours. If local redness, swelling, pain, hard nodules, etc. appear, they are normal side effects of the vaccine, and fever is also a side effect of the vaccine, and changes in the condition can be observed when the fever is low and no special treatment is needed. If high fever occurs, antipyretic and analgesic drugs can be given.