Prevention of pyrexia includes avoiding hot environments, taking measures to protect oneself from the sun and equipping oneself with items to prevent heat stroke. 1. Avoid hot environment: In hot summer, avoid going out or working during the time of strong sunlight and high temperature, and also try to shorten the time of being in the hot environment, which is the best way to prevent pyrexia. 2. Take precautions against the sun: Wear loose, breathable, sun-protective clothing, sun hats, and sunscreen to prevent pyrexia. 3. Equipped with items to prevent heat stroke: you can equip with medicines to prevent heat stroke, such as anemometer and cool oil, and supplement sufficient water to the body, such as saline, to replenish the body’s water and electrolytes to avoid dehydration and effectively prevent pyrexia. When the aura of heat stroke is found to immediately go to the shade to rest, drink water, and promptly go to the hospital for treatment to avoid delay, resulting in pyrexia.