The invention discloses a pipeline displacement monitoring system, and belongs to the field of pipeline monitoring. The pipeline displacement monitoring system comprises a satellite monitoring module,and a reflection pile, adjusting rods, a connecting frame, a universal connecting rod, a pipe hoop, a reflection ball and a reconnaissance module which are sequentially connected from top to bottom.The pipe hoop sleeves a to-be-monitored pipeline, and the adjusting rods are used for adjusting the orientation of the reflecting surface of the reflecting pile; the satellite monitoring module is used for monitoring the displacement change of the reflection pile; the reflection ball is arranged at the upper end of the reflection pile; the reconnaissance module is used for monitoring the displacement change of the reflection ball. According to the pipeline displacement monitoring system provided by the invention, the reflection pile can change along with the displacement change of the pipeline. Moreover, the satellite monitoring module is arranged and matches the reflection pile for use, so that the displacement change of the reflection pile can be accurately monitored, and the displacement change of the pipeline is further monitored.