MMR generally refers to the MMR vaccine. No reaction to the MMR vaccine is usually normal and there is no need to worry too much. MMR vaccine is designed to prevent three common acute respiratory infectious diseases such as measles, mumps and rubella. Due to the differences in personal constitution, some people may not react to the ingredients of MMR vaccine, which is a normal phenomenon. Some people may have swollen lymph nodes in the cheeks or neck after receiving MMR vaccine, accompanied by mild fever, skin rash and other adverse reactions, which can be relieved after a period of time. After receiving MMR vaccination, one should ensure sufficient rest time and avoid over-exertion. Pay attention to keep warm, avoid getting cold, and do not engage in strenuous activities. In terms of diet, you can choose to consume foods rich in vitamins and proteins, such as grapes, beef, etc., and eat less spicy and stimulating foods, such as chili peppers and curry.