Body temperature is one of the important vital signs of the human body. Hypothalamus and temperature receptors monitor the temperature regulation. Normally, the human body will regulate the temperature within the normal body temperature range through its own thermoregulatory system. However, there are many events (anesthesia, surgery, first aid, etc.) in the hospital that will disrupt the thermoregulatory system of the human body, and if not treated in time, it may cause damage to multiple organs of the patient and even lead to death, which requires real-time continuous monitoring of the patient 's body temperature by medical staff.