The symptom of fever in baby’s limbs may be caused by viral cold, indigestion, tonsillitis and other factors. 1. Viral colds: when viruses enter the body with breathing, they can cause damage to the mucous membrane of the respiratory tract and produce aseptic inflammation such as hyperplasia in the respiratory tract, which leads to a decrease in the immune ability of the baby and the symptom of fever in the limbs. 2. Indigestion: consuming too much food will lead to food accumulation in the child’s stomach and intestines, and the prolonged accumulation of food will produce endogenous heat, which will cause the baby’s extremities fever phenomenon. 3. tonsillitis: when viruses, bacteria and other pathogenic microorganisms attack the human tonsils, will lead to tonsil edema, congestion and other inflammatory reactions, and then the baby will appear limb fever symptoms. Since there are many causes of fever in the limbs of babies, parents are advised to take their children to the pediatric department of the hospital for consultation and active treatment.