Two-year-old baby fever reaches 39 ℃ should be given to reduce fever treatment, reduce high fever drugs such as oral Merlin or Tylenol, can also be anal fever suppositories, such as ibuprofen suppositories or acetaminophen suppositories. You also need to give physical cooling, physical cooling methods are warm baths, or bubble feet with warm water, rubbing the heart of the feet and hands. Because high fever can easily cause cold hands and feet, rubbing the hands and feet warm will help increase the permeability of blood vessels and facilitate blood circulation. At the same time, try to feed your child more warm water, which can also increase blood volume and promote the excretion of toxins. Finally, go to the hospital for blood tests to see what kind of pathogens are causing the problem. If it is a bacterial infection apply cephalosporin anti-inflammatory drugs, is mycoplasma infection apply azithromycin or roxithromycin, if it is a viral infection, you can first apply Chinese medicine, such as Pu Di Lan anti-inflammatory granules, pediatric Chai Gui antipyretic granules, or Blue Baicalin oral liquid.