The baby after the MMR vaccine fever subsided out of the rash is generally able to take a bath. MMR vaccine, can prevent measles, mumps and rubella three more common acute respiratory infectious diseases, some babies after this vaccine will appear fever and rash symptoms, generally can be relieved by themselves, do not need to worry too much, in the rash can also take a bath, and will not aggravate the symptoms. When bathing, you should pay attention to avoid scrubbing the rash to avoid damage to the skin, and also pay attention to control the temperature of the bath water to avoid too high a temperature, and after bathing, you should dry your body in time, and put on clothes in time to avoid catching a cold. If there is a fever or skin lesions worsening after bathing, it is recommended to consult a doctor in time to avoid delaying the condition.