Children with fever after vaccination often do not need special treatment, as long as the fever is not too high and the child is in good spirits. However, in some special cases, if the fever is relatively high, it should be treated with antipyretic medication. Especially for younger children, high fever convulsions can easily occur, so timely fever reduction is needed. If the child is six years old or older, the fever can be reduced by inserting a fever suppository into the anus. For children under six years of age, oral ibuprofen suspension or acetaminophen pellets are recommended to reduce fever. In addition, vaccines are often inactivated viruses, bacteria or toxoid, and often inactivated viruses are more common. Therefore, it is necessary to choose the appropriate medication for anti-inflammatory treatment depending on the type of infection, and blood tests and C-reactive protein are required. If the infection is bacterial, it is determined that antibiotics are needed for treatment, and if the infection is viral it needs to be treated with an antiviral drug such as ribavirin.