In the middle of the night to know whether the baby has a fever, you can do the following methods: a. Many parents are by hand to feel the baby’s temperature, so as to grasp the baby’s temperature, if after touching up there is a body temperature significantly hotter than normal, consider it a fever, then you can apply the thermometer gun to measure the forehead, or the skin temperature to determine whether it is a fever, you can also use a mercury thermometer, to Underarm temperature measurement. If the baby has a fever in the middle of the night and the body temperature is ≥38.5℃, it is necessary to apply antipyretic medicine to reduce the fever. When the body temperature is lower than 38.1℃, under the state of low fever, parents can use antipyretic stickers or wipe with warm water, as well as by repeatedly drinking water, to give the baby antipyretic treatment.