Body temperature can be divided into four levels, according to different body temperature levels, generally at 37.3-38℃ is called low fever, 38.1-39℃ is called moderate fever, 39.1-41℃ is called high fever, and greater than 41℃ is called super high fever, so body temperature 41℃ should belong to high fever or super high fever. This kind of temperature is usually seen in lobar pneumonia, pyelonephritis, severe infection, after trauma, or problems with the central cranial thermoregulatory center. At this point, the patient’s specific situation is analyzed in order to clarify the cause of the fever. If a fever of 41 degrees Celsius persists, it can cause serious damage to the body and can lead to problems with the physiological functions of the body, and should be treated promptly.