Baby after fever 35.8 ℃ body temperature is generally not dangerous, may not be timely hydration, change of clothing, warmth is not timely and other reasons; can drink more warm water, strengthen the care and warmth and other measures can be restored to normal body temperature. The baby’s body temperature of 35.8 ℃ after fever reduction is due to the application of antipyretic drugs after the body sweats a lot, or the existence of repeated application of antipyretic drugs, overdose of antipyretic drugs. Normal body temperature in 36 ℃ to 37 ℃, body temperature of 35.8 ℃ belongs to the body temperature is too low, at this time you can let the child drink some warm water can promote metabolism, strengthen the care and warmth to avoid cold, in the cold temperature when you need to add timely clothing, through the above methods baby temperature will gradually return to the normal range. If the baby after the above operation is still persistent hypothermia or accompanied by other abnormalities, the need to immediately go to the hospital, a clear diagnosis of the cause of the targeted treatment, they can not just randomly use drugs.