Baby fever 38 ℃ hands and feet cold because in the fever state, peripheral blood vessels are in a state of contraction, the phenomenon of cold hands and feet can occur. Fever is a common manifestation of pediatrics, mostly due to the body under the influence of pathogenic microorganisms and other factors, there is a dysfunction of the thermoregulatory center, manifested as fever, it is generally believed that the body temperature is higher than 37.5 ℃ that is fever. In the early stage of temperature rise, such as 38.0 ℃, there can be peripheral vasoconstriction of the extremities, manifested as cold hands and feet, can be accompanied by skin pallor, some babies can also appear skeletal muscle contraction, manifested as chills, body temperature can be significantly higher. The process need to pay attention to warmth, moderate regulation of indoor temperature, at the same time need to closely monitor the body temperature, beware of the emergence of convulsions, if necessary, go to the hospital.