Reasons for children with fever and hot hands and cold feet: First, fever but hot hands and cold feet is a phenomenon of false cold and true heat. It is especially common in infants and children under three years old, mainly because the amount of blood in the baby’s extremities is less than that in the internal organs. Due to the lack of blood supply to the extremities, and therefore more likely to be cold than adults. Second, the baby’s nervous system is not yet well developed, and the autonomic nerves responsible for managing vasodilation and contraction are easily confused, resulting in small blood vessels at the end of the limbs being spasmodically contracted and chilled when the fever first breaks out. Third, because the child’s central nervous system is not yet mature, the ability to regulate body temperature is not perfect, if the temperature of the surrounding environment is low, because the child’s hands are exposed to more time outside, so there will be hot hands and cold feet. In normal life, you should pay attention to give your child more fruits and vegetables, pay attention to keep optimistic emotions, pay attention not to make your child too tired, and pay attention to the recovery of the body. In addition, if there are any other symptoms, you should go to the hospital for examination and appropriate treatment.