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Considering the difficulties of obtaining the body temperature of pigs timely in the process of large-scale pig breeding, an inspection system based on infrared technology was designed to realize the rapid monitoring of body temperature in the facility pig farm. The hardware of system included an infrared mobile acquisition device, a system control device, and the power supply device. The infrared mobile acquisition device was comprised of a slide rail, a mobile car, an infrared thermal imager, and a protective shell;the system control device was comprised of a HP MINI microcomputer, a XP2-18R/RT integrated controller, and a DM542 digital motor driver;the power supply included cables and cable blocks. The control system of equipment integrated infrared image acquisition, storage control, mobile car operation control and data communication with remote server, etc. The equipment was deployed and experimented in the limit bar pig farm for 28days. The experiment showed that the system worked stably and the average loss rate of infrared images in the inspection process was 1.12%, which could effectively collect the infrared images of pigs in the limit bar pig farm. The ear roots area was selected as the temperature sensitive area in the experiment. According to the statistics, the periodic inspection accuracy of the ear roots area of pigs was over 90%, which can effectively monitor the temperature of the ear roots area of pigs. The experiment also monitored the maximum temperature of the ear roots region of No.3 to No.6 pigs for five consecutive days and counted their daily mean value. The analysis verified the scientific value of temperature, which could provide effective monitoring information for the breeding personnel, and was of great significance for the health monitoring and epidemic prevention of pigs in the field of pig breeding.