The MMR vaccine usually refers to the MMR vaccine. Rashes after MMR vaccination usually do not require special treatment, but those with severe symptoms should seek medical attention and be treated with medication under a doctor’s supervision. MMR vaccine is a vaccine used to prevent three common respiratory infections in children: measles, rubella and mumps. After receiving the MMR vaccine, patients may experience symptoms such as a mild rash, which is usually normal and not contagious, and usually requires no special medication, and the symptoms can be relieved on their own after a period of time. However, if the area of the rash increases gradually and the child develops severe local itching, the skin can be washed with local glycerine lotion as prescribed by the doctor, and antihistamines such as cetirizine hydrochloride and loratadine can be given to alleviate the symptoms of rash and itching if necessary. MMR vaccine rash, parents do not have to worry too much, serious cases should be timely consultation, not blindly given medication. In addition, after receiving MMR vaccine, you should take proper rest, drink more water, and pay attention to keep the skin clean to avoid adverse reactions to the vaccine.