There is no fastest physical way to reduce fever in children. Physical fever reduction mainly includes antipyretic patches, warm water baths, reducing the amount of clothing worn, and lowering the indoor temperature. 1. Use antipyretic patches: antipyretic patches are topical antipyretic patches. When a child’s fever does not exceed 38.5 ℃, the use of antipyretic patches can play an auxiliary role in lowering the temperature. It is recommended that fever reducers should not be used for too long to avoid causing skin damage. If there are allergic symptoms such as rashes and itching after using the fever patch, you should stop using it immediately. 2. Warm water bath: warm water bath can remove sweat, the water temperature should not be too high, wipe parts of the neck, armpits, elbows, etc., can play a cooling effect. So when the child’s fever is not more than 38.5 ℃, warm water bath can help reduce body temperature. 3. Reduce clothing: When the child has a fever, parents should properly reduce the clothing worn by the child to avoid excessive clothing should the child’s body heat dissipation. 4. Reduce the room temperature: children with fever suggest that parents timely ventilate the room, the room temperature should not be too high, which is conducive to children’s fever. There is no such thing as the fastest physical antipyretic method for children with fever, parents can take a variety of physical antipyretic methods when the child’s temperature is below 38.5 ℃. If the physical cooling can not be pushed, it is recommended to take the child to the doctor for treatment.