If you have fever after polio vaccination, if there is no other manifestation but simple fever, it is mostly considered as post-vaccine reaction. It is recommended to observe the change of body temperature and the change of local rash, which is a normal post-vaccine reaction, drink more warm water and try to deal with physical cooling. If the body temperature is 37.2℃-38.5℃, you can put on a cooling patch and wipe the neck, armpits and thighs with warm water. If the temperature exceeds 38.5℃, only oral antipyretic drugs can be taken for treatment, but not necessarily antibacterial drugs or antiviral drugs to prevent the effect of the vaccine from being affected. If you have repeated high fever, you need to go to the hospital in time. Generally, the fever will disappear after three days of post-vaccine reaction.