Children may have fever after vaccination, but they are generally in good spirits and the temperature is not very high. A body temperature lower than 38.5°C usually does not require antipyretic drugs to reduce fever, but can be treated with physical cooling, drinking more water and feeding warm water regularly to reduce fever, or wiping with warm water to reduce fever. But be sure to avoid rubbing to the vaccination site to avoid infection, and can also paste antipyretic paste, paste on the forehead, neck, limbs and other parts to play a fever-reducing effect, but also to avoid paste to the vaccination site to avoid infection. If the body temperature is ≥38.5℃ or the mental state is not very good after vaccination, it is better to go to the hospital for examination to clarify whether the fever is caused by the vaccination or by the combination of other diseases, so that further treatment can be provided under the guidance of the doctor.