Fever, as long as the hands and feet are still hot, usually indicates that the temperature will not continue to rise, but rather cooling performance, at this time should be diligent temperature measurement, observe the changes in the condition. When the human body has a fever, the body temperature rises rapidly, and when it rises to a certain level, it will slowly come down, from the beginning of the whole body hot, to extend to the extremities, such as hands and feet. At this time, blood circulation is faster, peripheral circulation is good, capillaries expand, and heat is concentrated to the extremities. Because it is in the heat dissipation stage, it produces too much heat and needs to be dissipated through the body surface, so when the hands and feet are hotter, it indicates that the body has been slowly reducing fever. Patients need to drink more water, take body temperature regularly, take antipyretic drugs as prescribed by the doctor, and cooperate with physical cooling to speed up the cooling rate. Patients with fever symptoms should seek medical treatment at a fever clinic or internal medicine department, and should not judge the condition on their own to avoid delaying treatment.