An infrared intrusion sensor positioning clamp comprises an upper shell and a lower shell. The upper shell and the lower shell are fixedly connected and then a combined cavity of the upper shell and the lower shell is internally provided with a wire groove. The wire groove is provided with two wire groove ports for communicating with the outside. The middle of the upper shell and the lower shell is provided with a U-shaped clamping groove in the thickness direction. The two side walls of the U-shaped clamping groove are respectively and inwardly provided with infrared tubes which are in contraposition to each other. The infrared intrusion sensor positioning clamp is designed directing at the problems existing in an infrared intrusion sensor. When the infrared intrusion sensor positioning clamp is in use, the positioning clamp rides on an outer end of a hanging rod used for hanging a caution board through the U-shaped clamping groove; when the caution board needs to take and use, operation personnel must remove the positioning clamp in the first place so as to enable the two infrared tubes in contraposition to each other to start to work; and then, a whole safety measure management system is initiated to start the alarm work and the objective of real-time monitoring of the caution board is realized.