2-year-old baby palms fever generally refers to the palms of the hands hot, may be due to metabolism, fever, environmental factors and other reasons. 1. Metabolism: children metabolism vigorous blood circulation is faster, which will lead to the body produces more heat, touch will feel the phenomenon of high temperature in the palm of the hand. 2. Fever: may be due to infection, drug fever, systemic lupus erythematosus and other causes, can make the thermoregulatory center of the regulating point of the upward shift, thus appearing in the palm of the hand, forehead and other places hot phenomenon. 3. Environmental factors: may be due to the child clothes wear much, air conditioning or outside temperature is too high cause, thus can appear the phenomenon of hot palms, which belongs to the physiological phenomenon. 2-year-old baby palms hot, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.