Toddler sleeping body temperature 38 ℃ belongs to fever, is not normal. Toddler armpit temperature is generally between 36 ~ 37.2 ℃ belongs to the normal range, more than 37.3 ℃ belongs to fever, toddler sleeping temperature 38 ℃ is low fever, need to be given in time to antipyretic, you can give the baby more water, appropriate reduction of clothing, warm water to wipe the body to antipyretic, and diligently measure the body temperature. If the baby sweats too much, you also need to change clothes in time, so as not to get cold and aggravate the condition. If the baby’s temperature continues to rise, you can give oral ibuprofen suspension, acetaminophen and other drugs under the guidance of the doctor to reduce fever, closely observe the changes in the condition, to prevent febrile convulsions (convulsions due to high fever), and if necessary, timely medical care, to clarify the cause of fever, to give targeted treatment in order to avoid delays in the condition.