The detection efficiency and automation degree of infrared thermal imaging body temperature screening system is very suitable for rapid body temperature screening in airports, hospitals, subways, stations, enterprises, docks, shopping malls and other occasions with large flow. At present, not only airports, stations and docks use intelligent full-automatic infrared thermometers as standard equipment for epidemic prevention, but more and more schools, supermarkets, communities and enterprises also use infrared thermometers as temperature screening and epidemic prevention tools.