Between 35℃-36℃ is not considered a low fever, it is a case of hypothermia, which may be caused by poor blood circulation, or chronic bacterial infection. The normal human body temperature is between 36℃-37℃, 37.3℃-38℃ is considered as hypothermia. A body temperature between 35°C-36°C is considered hypothermia and can be either physiological or pathological. In the physiological case, it is mostly seen when the metabolic rate of the body is relatively low, the ability to produce heat is reduced, and heat dissipation exists at the same time, so a state of hypothermia can occur. In this case, no special treatment is needed and the body temperature will gradually return to normal as the body’s metabolic rate increases. Pathological conditions are most often seen in cases of central thermoregulation disorders, hypothyroidism, central nervous system diseases, and after the patient has applied antipyretic drugs and sweated a lot, or after the patient has applied physical cooling measures such as ice caps and ice packs. In this case, if there are no other uncomfortable symptoms, improvement can be made by increasing clothing and improving the diet appropriately, such as consuming more food rich in high quality protein, which can increase the body’s basal metabolic rate and thus increase the body’s heat production. For patients with chronic diseases, treatment is also needed for the primary disease.