Adults with a fever of 37.8℃ may heal on their own, but if symptoms worsen, they should be treated actively at a fever clinic or internal medicine department. Body temperature between 37.3℃-38℃ is low fever, the condition is mild, and if the patient’s body has strong resistance to disease, it can generally be self-healed by physical cooling, drinking more water, paying attention to rest and other methods of regulation without taking medication. Physical cooling is a common cooling method, the advantage is that it will not produce side effects on the body, such as cold and wet compresses, alcohol rubbing, especially in the neck, armpits, groin and other large blood vessels through the parts of the body, can be more rubbing. In addition, drinking more water is also conducive to cooling, fever will consume the body’s water, drinking more water can speed up sweating, urination, promote the body’s toxins and metabolic waste discharge, conducive to the condition as soon as possible recovery. If the body temperature does not drop but increases, it means that the condition is aggravated, so you need to seek medical attention without delay to avoid aggravating the discomfort.