After the outbreak of novel coronavirus pneumonia, Anhui Lijian Defense Technology Co., Ltd. urgently developed a scientific prevention and control product for early personnel screening to combat the epidemic - intelligent infrared thermography temperature screening device. A large number of intelligent infrared thermography temperature screening devices are being inspected by technicians of Anhui Lijian Defense Technology Co., Ltd; This instrument can perform non-contact long-distance temperature detection on the population, effectively screen individuals with abnormal body temperature in real time, and achieve early detection and isolation. Currently, handheld products have been launched on the market.