Body temperature in 37.3 ℃ ~ 38 ℃ are considered hypothermia, on the clinical sometimes hypothermia is more difficult to treat than hyperthermia, a variety of diseases can cause hypothermia, rheumatism, tuberculosis, chronic inflammation, indigestion, endocrine disorders, immune deficiency and some tumors can lead to hypothermia, the symptoms of hypothermia, we can take the following measures: 1, unexplained hypothermia do not use drugs indiscriminately, fever is the body resistance to disease The clinical does not exceed 38 ℃, it is not recommended to use antipyretic drugs, generally take physical cooling, drink more water, promote comfort and other cooling. 2. If the fever is low for more than 5 days, seek medical attention, find the cause through bacterial culture and various examination methods, and carry out symptomatic treatment. Those suspected of infectious diseases should be isolated according to the requirements of infectious disease isolation. 3, pay attention to adequate rest, and keep the clothing and cover to moderate, sweating in time to change the attention to skin hygiene. 4.Supplement nutrition, eat more high-protein, high-calorie, vitamin-rich easy-to-digest food, eat less and more meals, drink more water, not less than 2000ml per day, and pay attention to supplement sodium-containing drinks when sweating. For patients with low fever, the most important thing is to find the cause and treat the symptoms. At the same time, we should pay attention to proper rest, diet adjustment, and also pay attention to strengthening physical exercise to improve the body’s resistance is the main thing.