A temperature of 37.3 degrees may be a low fever (a type of fever), or there may be an error in measurement. 1. Fever: The grading of fever is based on the oral temperature, 37.3-38 degrees is low fever, 38.1-39 degrees is medium fever, 39.1-41 degrees is high fever, and 41 degrees or more is ultra-high fever. 37.3 degrees is low fever. 2. Measurement error: the head end of the thermometer should be placed under the patient’s tongue after sterilization, and the patient should be allowed to close his lips tightly for 5 minutes before reading the normal value. Before the measurement, the patient should be instructed not to breathe through the mouth, and forbidden to drink hot water and ice water within 10 minutes before the measurement. If there is any misunderstanding in the above measurement process, it will affect the correctness of the body temperature. Body temperature of 37.3 degrees, if accompanied by symptoms of discomfort, it is recommended to seek medical attention.