Children with low fever after vaccination, according to the child’s mental state and the degree of fever, can be used physical cooling, taking antipyretic drugs and other methods of treatment. 1. Physical cooling: For children with good mental state and body temperature not more than 38.5 degrees Celsius, you can use physical cooling methods to treat the symptoms, such as using warm towels to wipe the child’s armpits, groin and other parts of the body; antipyretic stickers on the child’s forehead; and give more water and other methods. 2. Taking antipyretic drugs: For children with poor mental state or body temperature over 38.5 degrees Celsius, antipyretic drugs such as ibuprofen suspension, acetaminophen granules, etc. are needed. These medications can cause gastrointestinal irritation, impaired liver function and other adverse reactions. When using these medications, be sure to follow the doctor’s instructions strictly under the guidance of the doctor.