Children’s fever and shivering are mostly related to infections, and may also be caused by high fever and convulsions. 1. Infection: common types of infection include bacterial infection and viral infection, which can involve the respiratory system, digestive system, nervous system and other systems. Inflammatory reaction will produce a large number of toxins, stimulate the thermoregulatory center and cause fever. Children are younger, the body temperature center is not fully developed, when the body temperature rises faster, there is sympathetic excitation, resulting in peripheral vasoconstriction, the phenomenon of chills and shivering will occur. If the rise in body temperature has not yet reached the peak when the fever occurs, the body will contract through the muscles of the limbs, which will be manifested as twitching and shivering. 2. Febrile convulsions: children often have muscle twitching or dystonic changes at the beginning of fever or during the rapid rise in body temperature. To the whole body convulsions, loss of consciousness is more common, some children can be manifested as only local body parts appear twitching or dystonia change. Children with fever and shivering, there may be other reasons, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.