The precautions of MMR vaccine are to pay attention to contraception, stay in observation, pay attention to rest, etc.; contraindication for patients suffering from acute or chronic diseases, or in the period of morbidity, and women in pregnancy and other special groups are prohibited. The precautions of MMR vaccination are: 1. Women of childbearing age who have been vaccinated should use contraception for at least 3 months after the date of vaccination. 2. For those who have received immunoglobulin, the vaccination should be given one month after the date of immunoglobulin injection. 3After receiving this vaccine, the child should be observed for reactions and should stay in the vaccination center for more than 30 minutes without abnormalities before leaving. 4. After receiving this vaccine, drink plenty of boiled water, take proper rest, pay attention to keep warm and avoid strenuous activities. Contraindications are: 1. People who are allergic to any components in this vaccine, including antibiotics, and excipients should not be vaccinated. People suffering from severe chronic diseases, acute diseases, as well as people with fever, or in the acute exacerbation of chronic diseases should not be vaccinated. 2. Women during pregnancy should not be vaccinated. 3. People who are undergoing immunosuppressive treatment, or people with immunocompromise or immunodeficiency should not be vaccinated. 4. People with uncontrolled epilepsy, encephalopathy, and other progressive neurological diseases should not be vaccinated. When receiving the vaccine, consult with your doctor to inform him/her of your condition and ensure that you are suitable for the vaccine before receiving it.