Protein allergy can be vaccinated with the MMR vaccine, and it is sufficient to keep an eye on the patient after vaccination. MMR vaccine is a live attenuated vaccine that prevents measles, rubella and mumps viral infections. When receiving the MMR vaccine, it is necessary to pay attention to whether there are contraindications to the MMR vaccination in physical conditions. Contraindications include allergy to any of the ingredients in the vaccine (gelatin, sucrose, proteins, etc.), chronic and exacerbating seizures or acute illnesses such as fever, a history of anaphylaxis, a history of anaphylactic purpura, uncontrolled epilepsy, and other neurological disorders. The active ingredients of MMR vaccine are measles, rubella, mumps live attenuated virus, human albumin, gelatin, sucrose, arginine, sorbitol, urea, sterilized water for injection, etc., and it contains very little egg protein, so it is possible to be vaccinated.