Children in fever, especially in high fever state, due to changes in the thermoregulatory center, at the same time due to the skin microvascular contraction, which will lead to peripheral circulation is not good, there will be the phenomenon of cold feet. Need to immediately take the following behavior to solve: 1, immediately to the child for antipyretic treatment, can be taken orally or by injection for antipyretic. 2, oral antipyretic drugs at the same time, need to immediately give the child to drink more warm water, small infants and young children’s families need to be given to the child within a short period of time to grasp the rubbing of the feet, to promote blood circulation. Bigger children, within an hour to run and jump back and forth, at least running and jumping for about 15-30 minutes, is conducive to accelerate blood circulation, restore the normal blood supply of blood circulation, feet will soon return to normal temperature.