Fever in hands and feet of young children belongs to a manifestation of the fever stage of the organism, and it is not clear what kind of disease it is. Fever is caused by a variety of factors in young children’s body temperature center disorders, such as cold, viral infection or bacterial infection, etc., will cause increased heat production, heat dissipation is reduced, the body temperature rises. Fever in toddlers is generally divided into 3 periods, the rising period, the temperature persistence period and the falling period. During the rising period, the peripheral circulation of toddlers is relatively poor, so they will have lower skin temperature, chills or cold hands and feet. After the rising period, young children enter the fever persistence period, most of the young children will appear hands and feet hot hot situation, because the body after the increase in heat production, respiration and heart rate will increase, the peripheral circulation of the limbs faster, the temperature of the hands and feet will increase. The toddler fever appeared hands and feet fever phenomenon, parents should closely monitor the toddler temperature, go to the hospital in a timely manner to find out the cause of the toddler fever, clear cause of the disease and then take symptomatic treatment.