Anal temperature testing is the insertion of a thermometer into the anus for temperature testing, the advantage of this measurement method is more accurate. But the disadvantage is that the anus is not hygienic, disinfection is more troublesome and operation is not convenient, so this temperature test can only be used in special people or special departments, such as the ICU room, which is also known as the intensive care unit. Normally, clinical and home are not used, giving the axillary temperature monitoring, more practical and more convenient. The difference between the detection of body temperature and anal temperature is not too big, so the practicality is the strongest. In recent years, some people use infrared and ear wall temperature detection, which is more convenient, simple and fast for pediatrics, and is also the way people are more willing to use. Therefore, for the detection of anal temperature, it can only be applied to special people, and only in special departments can be used.