When a one-year-old baby has a fever of 38℃, this is a low fever, no need to use antipyretic drugs, you can use physical methods, such as drinking more water, increasing the amount of fluid intake, you can also use warm water to wipe the forehead, neck, underarms and groin. Then it is important to make sure that the end of the extremities are warm. If the extremities are cold, the body temperature will gradually rise and chills will occur, which can seriously lead to febrile convulsions. When the body temperature is measured above 38.5°C, it is time to use antipyretic drugs. Common antipyretics are ibuprofen and acetaminophen, you can choose one of them, but remember that the interval between 2 antipyretics must be more than 4 hours, and you cannot apply antipyretics repeatedly in a short period of time.