A 12-year-old child with a temperature of 37.2 degrees for a month, but with normal spirit, diet, sleep, etc., is usually normal, but if there are uncomfortable symptoms in spirit, diet, sleep, etc., you should seek medical attention. The normal body temperature of human body is between 36℃～37.2℃, if the body temperature is 37.3℃～38.5℃ belongs to low fever, if the body temperature is 38.5℃～39℃ belongs to moderate fever, if the body temperature is higher than 39℃ belongs to high fever. The child’s body temperature center of the regulatory ability is not so perfect, such as puberty when the child’s body hormone secretion, intense exercise can cause a temporary increase in body temperature. So if the child’s spirit is normal, daily diet and sleep are no problem, generally do not need special treatment, but if the child appears depressed, loss of appetite, etc., should promptly consult a doctor for examination.