Cold hands and feet and hot hands and feet during fever are caused by different stages of fever. During the period of rising body temperature, the body temperature rises rapidly, heat production increases and heat dissipation decreases, symptoms such as chills, pale skin, chills, etc., and cold hands and feet can occur. During the peak temperature period, when the body temperature is regulated to a height compatible with the new level of the regulatory point, it fluctuates at a higher level, and this is when the body temperature is in an auditory hyperthermia period. The metabolism of this period is characterized by heat production and heat dissipation at a higher level. At this time, the patient feels hot, the skin is red and dry, and there is heat in the hands and feet. If fever symptoms occur, you should seek medical attention and standardize treatment under the guidance of a doctor.