Infrared thermometer in the large flow of people, intensive areas, such as schools, shopping malls, banks, stock exchanges, theaters, fairs and other public **** places; the use of screening-type temperature measurement, rapid realization of fever screening, to avoid manual screening caused by crowding and gathering of people. In close proximity to the flow of people through the entrance and exit areas, set up a dual-spectrum temperature measurement camera, the lens is aimed at the access channel, the temperature measurement camera set up a close to the fever (eg: 3.3 ℃) alarm threshold, when the flow of people in the reach or exceed the threshold, the back-end platform alarm to remind the staff of the fever suspected personnel for the second temperature measurement, not only rapid screening, but also to avoid the staff of one-on-one contact with the close-range type of temperature measurement work, the formation of cross-infections, the formation of cross infection. The temperature measurement work, the formation of the risk of cross-infection.