Fever is fever, MMR is considered to be MMR vaccine, if the baby after MMR vaccine fever symptoms are more serious need to take general measures, medication, if the symptoms are mild, no need for treatment. 1. General measures: Usually, parents need to use warm water to wipe the whole body of the child, mainly the parts with dense blood vessels, such as the groin, popliteal fossa, armpits, neck and other places, which can promote the body to dissipate heat. Secondly, cooling pads can also be placed on the forehead and wrists, which can lower the body temperature. At the same time, the child needs to drink more hot water to improve the metabolism of the whole body. 2. Medication: For children whose body temperature reaches 38.5℃, on the basis of general measures, they also need to take acetaminophen, ibuprofen and other antipyretics under the guidance of the doctor. Besides, usually, some babies will have mild fever after receiving MMR vaccination, which usually needs no treatment and can be relieved by themselves after a period of time, so there is no need to worry too much. In summary, when the baby after the MMR vaccine fever symptoms, high temperature need to go to the hospital, follow the doctor’s instructions for standardized treatment.