Children’s hands are cold when they have a cold, which may be related to the following reasons: First, the body is hot but the hands and feet are cold, which is a kind of fake cold and real hot phenomenon. As it is common in children under three years old, mainly because the blood volume of children’s limbs is less than that of their internal organs, due to the lack of blood supply to the limbs, and thus more likely to be cold than adults. Second, the baby’s nervous system is not yet fully developed, responsible for the management of vasodilatation, contraction of the autonomic nervous system is easy to confusion, resulting in fever at the end of the extremities of the small blood vessels in spasmodic contraction and cold. Third, because the child’s central nervous system is not yet mature, the ability to regulate body temperature is not perfect. If the ambient temperature is low, the child’s hands and feet are exposed to more time outside, so there will be fever and cold hands and feet. Normally, you should pay attention to give your child more fruits and vegetables, pay attention to let your child keep optimistic mood, don’t let your child too tired, pay attention to the recovery of the body and so on. In addition, if there are other symptoms, such as a hot body, cold hands and feet, and the body temperature may rise quickly, you should go to the hospital immediately to receive a checkup and be treated accordingly.