An axillary temperature of 37.6 is not normal and is considered hypothermia. Normal axillary temperature is about 36-37 degrees Celsius, the body temperature will be affected by internal and external factors, but the body temperature will not fluctuate more than 1 degree Celsius for a long time. 36-37 degrees Celsius is the range in which the organs in the body function normally. Once this temperature is exceeded, the rate of enzyme catalysis in the body will be affected or even inactivated, and the functions of the body will not work normally. Hypothermia is 37.3 to 38 degrees Celsius, and 37.6 is considered hypothermia. It may be caused by infectious fever, tissue necrosis, vascular embolism, heat stroke, internal bleeding, bone fracture and other diseases. There are also physiological low fever such as nervousness, strenuous exercise or a slight increase in body temperature before menstruation. It is recommended to go to the hospital as soon as possible for examination to clarify the cause of the disease and treatment, so as not to delay the condition.