It is generally considered to be a low-grade fever of 37.3 to 38°C. Physical therapy such as warm water wipes, ice packs, and hydration are usually taken, while the cause of the fever is sought out and treated for the cause. Fever is defined as a central body temperature higher than the normal daily fluctuation range of body temperature. Clinically, a temperature of 37.3°C to 38°C is called hypothermia, or low-grade fever. Low fever can be relieved by physical cooling and medication. 1. Physical cooling: Usually the body temperature within 38.5 ℃ can take physical cooling to achieve the purpose of fever reduction, you can use a towel to wipe the torso, forehead and other parts of warm water, or use ice packs cold compresses on the head, and at the same time, by drinking warm water to promote the metabolism, but also to achieve the purpose of lowering the temperature. 2. Medication: If the low fever, accompanied by severe headache and other discomforts, or take physical measures after the body temperature continues to rise, reaching 38.5 ℃ or more, under the guidance of the doctor oral ibuprofen, acetaminophen and other medications, while assisting the use of antipyretic patches for treatment. However, it is necessary to follow the instructions for the rational use of medication, so as not to overdose, or irritation of the gastrointestinal tract. In addition, it should be noted that tuberculosis often causes low fever, if you suffer from tuberculosis, such as tuberculosis, or after treatment has not improved or aggravated trend, it is recommended to choose to consult a doctor in a timely manner, to identify the specific cause of the disease, and then carry out targeted treatment.